Since MP has been in a feature freeze for some time, there aren't that may new features (but a few have slipped in
). I would still recommend that you try out latest version (you can wait until RC2, perhaps).
Not so sure that you will get "official" support if you use 0.2.3.0.
Also: My weather will probably not work with 0.2.3.0 - along with other stuff. (<- lazy)