Releases

Plone 4.0.10 (Unreleased) (): Adds patches for the vulnerabilities announced in advisory #20110928.
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Plone 4.0.8 (Unreleased) (): Bug fix release for the 4.0 series
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Plone 4.0.6.1 (Unreleased) (): Bug Fix Release in Plone 4.0 series
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Plone 4.2.1 (Sep 07, 2012): Bugfix release for Plone 4.2
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Plone 4.2 (Jul 05, 2012): The second feature release in the Plone 4 series.
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Plone 4.1.6 (Jul 05, 2012): Bugfix release for Plone 4.1
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Plone 4.1.5 (May 31, 2012): Bugfix release for Plone 4.1
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Plone 4.1.4 (Feb 27, 2012): Bugfix release for Plone 4.1
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Plone 4.1.3 (Dec 08, 2011): Bugfix release for Plone 4.1
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Plone 4.1.2 (Oct 13, 2011): Bugfix release for Plone 4.1
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Plone 4.0.9 (Oct 12, 2011): Bug fix release for the 4.0 series.
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Plone 4.1.1 (Oct 08, 2011): Bugfix release for Plone 4.1
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Plone 3.3.6 (Oct 03, 2011): Large bug fix release for Plone 3.3
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Plone 4.1 (Aug 08, 2011): The second feature release in the 4.x series.
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Plone 4.0.7 (Jun 10, 2011): Bug fix release for the 4.0 series
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Plone 4.0.5 (Apr 13, 2011): Bugfix release for the Plone 4.0 series
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Plone 4.0.4 (Mar 05, 2011): Bugfix release for Plone 4.0.
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Plone 4.0.3 (Jan 28, 2011): Bugfix release for Plone 4.0
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Plone 4.0.2 (Nov 23, 2010): Bugfix release for Plone 4.0
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Plone 4.0.1 (Oct 08, 2010): Bugfix release for Plone 4.0
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Plone 4.0 (Sep 01, 2010): Plone 4 is focused on improving the speed, manageability and appearance of Plone while upgrading the underlying infrastructure in preparation for Plone 5. This version includes significant performance improvements, a new theme, search and indexing improvements, group dashboards, reduced memory footprint, improved handling of large files & media, faster folder implementation, better management of users and groups, dynamic forms using jQuery tools, and an improved first-run and upgrade experience.
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Plone 3.3.5 (Mar 17, 2010): Bugfix release for Plone 3.3.
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Plone 3.3.4 (Jan 18, 2010): Bugfix release for Plone 3.3. Includes a new release of Zope (2.10.11), which fixes a potential security issue, and a new release of KSS which avoids invoking Java when loaded. Please note that if you're using collective.indexing, you will need to upgrade to at least version 1.5.
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Plone 3.3.3 (Jan 09, 2010): A bugfix release for Plone 3.3.x.
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Plone 3.3.2 (Nov 20, 2009): A bugfix release for Plone 3.3.x.
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Plone 3.3.1 (Sep 09, 2009): This is a maintenance release for Plone 3.3. It features a performance fix, translation updates and several stability improvements.
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Plone 3.3 (Aug 19, 2009): After Plone 3.2 (which focused on packaging/installer improvements), this is a minor release that adds some new features. It does not include any major changes: all products that work with Plone 3.0, 3.1 & 3.2 should also work in Plone 3.3. The upgrade from Plone 3.x is simple and non-invasive, ensuring a smooth upgrade experience.
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Plone 3.2.3 (Jul 11, 2009): Bugfix release for the Plone 3.2.x series
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Plone 3.2.2 (Apr 09, 2009): Bugfix release for the Plone 3.2.x series
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Plone 3.2.1 (Feb 07, 2009): Maintenance release for the Plone 3.2.x series
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Plone 3.2 (Feb 07, 2009): The 3.2 release mainly focuses on improving the packaging (eggs, buildout) and installer experience, and is based on Plone 3.1. It does not include any major changes: all products that work with Plone 3.0 & 3.1 should also work in Plone 3.2. The upgrade from Plone 3.x is simple and non-invasive, ensuring a smooth upgrade experience.
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Plone 3.1.7 (Nov 14, 2008): Bugfix release for Plone 3.x
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Plone 3.1.6 (Oct 11, 2008): Bugfix release for the Plone 3.1 series
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Plone 3.1.5.1 (Aug 26, 2008): Bugfix release for Plone 3.1.x
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Plone 3.1.4 (Jul 30, 2008): This is a bugfix release for the Plone 3.1 series. It fixes bugs in the sharing page, through-the-web-customization and the updates the French translation of the Kupu visual editor to avoid an error message.
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Plone 3.1.3 (Jul 16, 2008): Bugfix release for Plone 3.1.x
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Plone 3.1.2 (Jun 05, 2008): Bugfix release for the Plone 3.1 series.
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Plone 3.1.1 (May 02, 2008): Bugfix release for Plone 3.1. This release fixes two critical problems in the CSRF protection for user management pages as well as a fix for a possible Zope startup problem.
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Plone 3.1 (May 02, 2008): The 3.1 release is a feature upgrade release for Plone 3.0. It introduces new features and polishes existing features but does not include any major changes: all products that work with Plone 3.0 should also work in Plone 3.1. The upgrade from Plone 3.0 is simple and non-invasive, guaranteeing a smooth upgrade experience.
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Plone 3.0.6 (Feb 16, 2008): Sixth maintenance release for Plone 3.0.
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Plone 3.0.5 (Jan 07, 2008): This is the fifth maintenance release of Plone 3.0.
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Plone 3.0.4 (Dec 10, 2007): This is the fourth maintenance release of Plone 3.0. This releases fixes stability problems introduced by the security fix for the CVE-2007-5741 security issue as well as several other fixes.
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Plone 3.0.3 (Dec 05, 2007): This is a maintenance release for Plone 3.0. This release fixes a number of small bugs and includes a fix for the CVE-2007-5741 security issue.
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Plone 2.5.5 (Dec 05, 2007): This is a maintenance release for Plone 2.5. This release fixes a number of bugs and includes a fix for the CVE-2007-5741 security issue.
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Plone 3.0.2 (Oct 25, 2007): This is a bugfix release for Plone 3.0. This releases fixes several minor problems that were found by users and integrators after the 3.0 and 3.0.1 releases.
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Plone 2.5.4 (Oct 25, 2007): A new minor release of Plone 2.5. Includes fixes for more reliable migrations, minor UI enhancements, as well as better performance for saving objects.
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Plone 3.0.1 (Oct 09, 2007): First maintenance release for Plone 3.0. This releases fixes several minor problems that were found by users and integrators after the 3.0 release.
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Plone 3.0 (Aug 21, 2007): Aims to make Plone more efficient to work with. This release adds versioning, locking, inline editing and validation, link integrity, intranet/extranet workflows, wiki support, OpenID support, and full-text indexing of Word/PDF. (If you're not using the installers, please note that this release requires Zope 2.10.4 and Python 2.4.4 — earlier versions will not work)
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Plone 2.5.3 (May 18, 2007): Important security fixes for potential XSS vulnerabilities, faster and more robust migration code, and more. A mandatory update.
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Plone 2.5.2 (Jan 17, 2007): Fixes to External Editor, LiveSearch, IE7 compatibility and many other things.
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Plone 2.5.1 (Oct 03, 2006): First maintenance release for Plone 2.5. This features a number of important security improvements and bug fixes, and is a required upgrade for Plone 2.5 users.
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Plone 2.5 (Sep 19, 2006): Integrating with PAS and Zope 3 views. Note: An updated version of the "Universal" installer was added on September 8, 2006
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Plone 2.1.4 (Sep 19, 2006): Fourth maintenance release in the Plone 2.1 series. This features a number of important security and bug fixes, and is a required upgrade for Plone 2.1 users.
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Plone 2.1.3 (Jun 03, 2006): The third maintenance release in the Plone 2.1 series. Focus on bug fixes. Read on for further details.
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Plone 2.1.2 (Jan 20, 2006): The second maintenance release in the Plone 2.1 series. Focus on bug fixes and migration improvements. Read on for further details.
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Plone 2.1.1 (Oct 13, 2005): The first maintenance release in the Plone 2.1 series.
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Plone 2.1 (Sep 06, 2005): This release of Plone focuses on Archetypes-based default content types, user interface improvements, speed improvements and new navigation tree/site map.
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Plone 2.0.5 (Dec 01, 2004): Plone 2.0.5 fixes many small issues with Plone 2.0.4 and has seen improvements in areas like Google indexing, printer stylesheets, and AM/PM support.
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Experimental Releases

Stable Releases