I think they will keep going - They've been selling out over the holidays.

On the tabletblog, they have an interview. They seem to think it is like the cell phone or (my take) the iPod. A new category of device. With WiMax (or for me, EVDO and wifi hotspots) everywhere, there is a new niche. The iPhone is crippleware (the n810 plus my EVDO does more - I can even download a podcast and listen to it without returning to the mothership, oh, I do need to try VNC and hamachi...).

Getting the right combination of portability and functionality won't be easy, but Nokia is way ahead. The n810 has killed my iPod and most of my laptop use since it is always there.