Great thread. The bigger problem I foresee with Maemo 6 is not whether we'll be able to run it or not on the N900(we sure will, eventually), rather whether we'll be able to run Maemo 5 software on Maemo 6 unmodified or not. Basically unless Maemo 6 will have a built in Maemo 5 emulator (much like xp support for windows 7), all the hard work of the community will be wiped out as far as Maemo 5 apps concerned: the cycle of porting will be forced to continue.