There have been a few interesting Maemo announcements lately. See the links below or Planet Maemo for a more complete story. The N810 form factor with HSPA, a faster processor and of course a open software stack could be an amazing device.
http://jaaksi.blogspot.com/2008/09/osim-news-whats-up-with-maemo.html
http://tabletblog.com/2008/09/maemo-summit-fremantle-and-what-it.html