OK, I received it yesterday... I must say I'm a bit disappointed at the moment, but I realize that's because everything is still in some sort of beta stage... I really hope that development will gain some momentum now that shipping is finally running.
The hardware gave me a very good impression, especially the keyboard is much better than what I expected, it's really usable.
Software-wise, there is MUCH to do... The video player is unusable at the moment, it's VERY slow. Wifi connection works fine, but someone should try to port firefox mobile
http://www.mozilla.com/en-US/mobile/ because the standard browsers are not really suited for horizontal resolutions lower than 1024...
Setting up your SD (i.e. running a bunch of mkdir) should be smoother, an icon like "prepare SD" would be very useful, but this is really minor, after you dig the information on the wiki.
Also I'd like to see an "organic" SDK, complete with emulator and chrooted environment, like the one you get for maemo or meego, but I'm aware that is a BIG piece of work.
Minimenu and PND are a bit "strange", I might get used to them, but I still can't find a way to access the readme inside the files... Once minimenu opened a text editor in the background, and it became visible only when I opened another application...
In general, as I said, I understand everything is just at the beginning. It's a bit of a shame, because it's really two years late and lots of other hardware is popping out everywhere, especially if the gaming side is not very important to you.
I hope I'll be able to devote some time to give a hand somewhere, I'm just a bit overwhelmed by the information one needs to start.
We'll see what the next months will bring to us..