the problem i find with maemo is that with each version, they keep changing the format and makes backwards compatibilty between maemo difficult. my bet this is going to be the same for maemo 6. everything will have to be re-package.

but this is only my experience starting with the n770.

the n800/810 is what should have been the n900 and thus the n900 now should have been much better coming out of the box.