Due to the N900 and the somewhat 'fickle' attention span/continuity within the maemo development community I'd say that personally I have given up on ever seeing the Mer project produce a stable and full featured product (as 'stable and full featured' as say Diablo).

Not to 'blame' the developers but there are simply not enough of them - and the ones still 'willing' to develop for legacy products like the NITs are even fewer.

I of course hope I may be wrong..but...I sort of doubt it