Check out my long video interview with the team behind the impressive Onyx Boox 60 device, which has Wacom stylus input (including scribble), WiFi and even 3G (could anyone of you clarify how they integrate cellular?)
http://armdevices.net/2010/01/16/onyx-boox-at-ces-2010/
They speak about how they develop the software, their webkit based web browser, more wireless Internet features that could come in software updates and I think they even speak about a range of future products that they are preparing on their same intellectual propriety. Perhaps also to be released under other big famous brands.