This would normally be posted in the Developers section but may be of interest to the general Sony forum visitor...
Our forum member, Porkupan (boroda), had posted a modified version of the PRS-950 firmware that also includes a clock, programmable keys, and other nice features. It had been updated with revisions in the latest Sony 2.0 firmware.
http://translate.google.com/translat...D15576&act=url
IMPORTANT: As with any non-standard modification - please use it at your own risk. If the device stops working or becomes "bricked," I'm not sure if we have methods to revive it like we did with the 505 reader.