Hi all,

on behalf of Zope Corporation and the Zope community I am pleased to announce the release of Zope 2.8.4. You can download the sources and the Windows version from

http://www.zope.org/Products/Zope/2.8.4/

Some new features of Zope 2.8:

• ZODB 3.4 with MVCC (multi version concurrency control) support. MVCC solves nearly every problem with ZODB read-conflict errors which is very important for high-traffic Zope sites.
• Extension Classes were rewritten as Python new-style classes making all features of Python new-style classes available in Zope objects. This includes support for cyclic garbage collection.
• Integration of Zope 3 technologies through Five (see http://codespeak.net/z3/five/)

For more information on what is new in this release, see the CHANGES.txt files for the release:

http://www.zope.org/Products/Zope/2.8.4/CHANGES.txt

See also:

http://www.zope.org/Wikis/DevSite/Projects/Zope2.8/OverView

Please bring all the bugs you have found to the Zope bugtracker:

http://collector.zope.org/Zope

For more information on the available Zope releases, guidance for selecting the right distribution and installation instructions, please see:

http://www.plope.com/Books/2_7Edition/InstallingZope.stx

Support Python versions:

At this time the only supported and recommended Python versions are 2.3.4 and 2.3.5.

Using Python 2.4.X is not supported and not recommended at this time. Python 2.4.X will be supported when a security audit took place. This means that you are using Python 2.4 + Zope 2.8 at your own risk. This warning also applies to binary packages that install Zope packages together with a system wide Python 2.4 installation (e.g. Fedora, SuSE...). Such installations are in general not supported. In addition there some third-party products and Python packages that don't work with Python 2.4 and can cause trouble when using Python 2.4.

-- Andreas Jung (andreas at zopyx dot com)