Hi all!
I'm developing the fremantle port of MM. I'll try to address a few of the questions I saw in this thread:

1) Maemo Mapper development has not stopped. :-)

2) Indeed I do not follow talk.maemo.org regularly (shame on me, I admit!), I just don't have enough time.

3) The UI in Maemo Mapper for the N900 is going to be almost completely different. Tap & hold action will simply disappear, replaced by some other interaction modes.

4) I'm not actively developing MM for diablo, because the two platforms are rather different when it comes to UI and location framework; but indeed, if while developing the fremantle branch I'll find some issues that can easily be fixed in diablo just by backporting the code, I'll do that.

5) You guys rock, I'll do my best so that you won't have to wait too long before having at least some work-in-progress version of MM in your devices. :-)

Ciao,
Alberto