We are soon going to begin checking in changes to the head of the Zope CVS that will require the use of Python 2.1. Once we start on the 2.4 tasks, you will not be able to use a public CVS checkout of Zope with older Pythons.
We are not going to start this until after Python 2.1 final is out (expected next monday), but wanted to give CVS'ers fair warning. If you are using the current public CVS and don't want to start using Python 2.1, you should either avoid doing any CVS updates until you're ready to migrate or move off of CVS to a current (2.3.1) release.
will there be a 2.3 maintenance branch or will all development stop on 2.3?
Sorry, I should have been more clear. There is (and will continue to be) a "current release branch", which is the branch that stable (bug-fix) releases are made from. Currently the release branch name is 'zope-2_3-branch'. This is probably the branch that most CVS users actually want to be using anyway. Running from the trunk you get all of the latest bugfixes, but you also get all of the latest half-baked work for the next feature release - which might be worse than the bugs you were trying to avoid in the first place :) So if you are running from CVS (but are not running from the current release branch) you can go into your local copy and do: 'cvs up -d -P -r zope-2_3-branch' to update to the release branch checkout. The warning is mostly aimed at the bleeding-edge people who use the CVS trunk. If you are running the release branch you will continue to get bug fixes and will not need to upgrade to Python 2.1, as the changes in preparation for 2.1 will only go into the trunk. Brian Lloyd brian@digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com