From Slashdot:
http://hardware.slashdot.org/article.pl?sid=07/10/01/1355235&from=rss
We know that Nokia hardware is NOT fully open. See for example the raffle issue with the Nokia N800 devices (where are they now?)
There are some groups/companies that are investing on GNU/Linux on handhelds and mobile phones.
ACCESS with the APL: http://www.access-company.com/products/linux/alp.html
More photos here: http://www.pdaexpertos.com/Articulos/Editorial/ACCESS_Linux_Platform_photos.... http://jaduncan.net/access-linux-platform-demoed
Openmoko group:
Palm is shipping devices with Windows Mobile and Palm OS. I hope they will ship GNU/Linux devices too. :)
Ubuntu Mobile:
https://wiki.ubuntu.com/MobileAndEmbedded