Maemo 5 and Nokia n900 press release
nokia.com
nokia.com
(Edit: replying here because of the reply limit: I Right, Qt is supported on Maemo 5, will be default on Maemo 6. II Indeed, and Nokia will support Python for Qt development too.)
Battery life was always a problem on the N810 with constant connectivity. We'll see how it holds up on the N900.
Still, it's a pity that it doesn't have multitouch.
But have a look at jalimo, https://wiki.evolvis.org/jalimo/index.php/Main_Page. You may be able to get something working. That is the beauty of openness.
So there's a fair chance that this will be available in the US for considerably less than 500 euros (my guess for the T-M price would be $199, but who knows?).