All what we know is that the N800 disappeared from various shops. Those who might know more are not allowed to talk.

About the N810: I thought the same as you do until I got a N810. Now, I appreciate the GPS (which actually works quite well), the transflexive screen, the keyboard (especially when using the command line), the smaller form factor. I miss the 2 slots, maybe we should have had 2 micro-SD slots instead of the obsolete mini-SD. Sandisk just announced a 12GB micro-SD.