0.7 has support for plone4 and the lastest versions of sqlalchemy,
prior plone3 is not supported in this version, use 0.6 if you need
plone 3 support, bug fixes will be back ported, but ongoing feature
development will continue on the 0.7 line.
i'm currently trying to prioritize between alternate data stores and
dexterity support, if you have an opinion on which you'd prefer to see
for the next feature development cycle, let me know.
cheers,
Kapil