We're going to go ahead and cut the 2.6.6rc1 release tonight, bugs.python.org willing. We've got a fairly clean test run on local hardware across OS X, Linux (Debian, Ubuntu), and Brian is looking at Windows now (the buildbots are a sad and sorry story). Ezio has done a great amount of work on getting 2.6.6 pretty clean with -3 warnings too.
Please consider the release26-maint tree closed for commits (except svnmerges) for the next 2.5 hours. I'll send another message at about 2200 UTC when I freeze the tree for those commits too. You can request exceptions by pinging me on #python-dev or (if you're feeling lucky ;) sending me an email.