Get it while it’s hot! I’ve started dumping information to the handhelds.org wiki:

Palm Treo 650 Wiki Page

I also managed to get the LCD properly initialized last night. It turns out that the L_BIAS pin set in pxafb.c is being set, even if the attached display doesn’t require it. This causes the Sony LCD that the Treo uses to go entirely white (as if it were disabled). Commenting this line out fixes it, but I’ll need to add a proper check for display type before submitting a patch to handhelds.org.

Once I have a keyboard driver and some way of communicating with the device (it’ll be either Bluetooth or USB Ethernet) I’ll probably push out a release for early adopters to play with.