PR1.3 is what want! You do not want to wait for MeeGo 1.1, the release coming has nothing to do with a daily working environment (not 1.0 more like 0.1alpha). Its the first core source release and this still in development (alpha).

N900 is hardware reference, that means that the core will run on it for development. Maybe it will get to a point where all, core and programs for step 5/5 work out but that still does not mean that it will be implemented for it.

The first few MeeGo releases you will see have an alpha or a beta state and wont be very handy for N900's daily use.

PR1.2 will be out pretty soon I guess as the SDK got upgraded 3 days ago (correct me if I am wrong but I read somewhere that it was 22nd, didnt upgrade yet as I am stuck with coding)