Software update: Zope 2.8.0 beta 1

Zope is an open source web application server written primarily in the Python development language. It includes a transactional object database, dynamic HTML templates, scripts, search engine and relational database connections. The program can be used completely independently, but it is also possible to link it to other programs, such as Apache. The developers have released the first beta version of 2.8.0 with the following release notes and changelog†

Hi all,
on behalf of Zope Corporation and the Zope community I am pleased to announce the release of Zope 2.8.0b1.

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.

WARNING: Due to the major changes in Extension Classes and ZODB there is a risk that some things are broken or do not work as they should. Backup your Data.fs before trying 2.8.0b1.

Zope 2.8.0b1

Features added:

• Added lazy: TAL expression and fixed defer: expression for python expression
• ZCatalog.CatalogBrains: An _unrestrictedGetObject method has been added.
• ZODB transactions now support savepoints. See transaction/savepoint.txt. These will replace subtransactions.

Bug fixed:

• Collector #1754: Fixed import of transaction in zopectl adduser (which wasy dying with a NameError).
• Collector #1750: StructuredText: fixed handling of image URLs with query string
• Collector #1748: Fixed SIGSEGV in Acquisition Hotfix_20050405: classes defined in untrusted code could shadow the roles of methods defined as protected by their bases.
• Collector #1656: Fixed enumeration within untrusted code (forward-port from 2.7 branch).
• Collector #1721: Fixed handling of an empty indexed_attrs parameter

[break]Zope is issued under the Zope Public License†