I will try to add all the links posted in this thread to this post.

Introduction:
N810 Introduction video
Ari Jaaksi on N810
Jonathan Greene on N810

Photos:
High-res pics of N810 by Reggie
N810 Photos on Flickr by Thoughtfix
Pics on Wired


Nokia N800 vs N810:
1. n800 vs n810 or who should consider buying nokia n810
2. nokia n810 and nokia n800 everything
3. n800 vs n810 tableteers have choices

Miscellaneous:
Youtube Performance Video (updated)
3D in Flash 9
Hacker Questions
What N810 means to Developers
Technical Details of N810 by arstechnica