If there are no sane <wink> objections, I'd like to move Zope trunk to using ZODB 3.5 tomorrow (Friday). Zope3 has been using ZODB 3.5 for months, and the intent has been that the ZODB 3.4 line survive for the sake of the Zope 2.8 line (as the ZODB 3.2 line survives for the sake of the Zope 2.7 line). Having Zope 2.9 and Zope3 use the same ZODB version should make sharing of Zope code across versions easier, allow 2.9 to exploit new ZODB features, and enable both Zopes to use the same, new zpkg-based build mechanisms. A related changed would happen soon after (probably also on Friday): the ExtensionClass-based Persistence package still lives in the ZODB part of the repository, despite that it can't even be compiled from a ZODB checkout (the prerequisite ExtensionClass implementation lives in the Zope part of the repository). So the plan there is to remove the svn:externals stitching Persistence into Zope from ZODB, and move the Persistence package from ZODB trunk to Zope trunk. In all, this one is just minor fiddling, but sane objections to this are welcome too.