OLPC designer Yves Behar is showing the XO-3 design over at http://www.forbes.com/2009/12/22/tablet-computer-negroponte-technology-cio-network-olpc.html
Imagine an ARM Powered Tablet computer with the 10.1" Pixel Qi screen, where the screen uses plastics instead of glass to be very resistive. Imagine low enough battery usage in transflective mode to power the device for 40 hours even though the less than 1cm in thickness of the Tablet does not allow for much space for the batteries. Imagine a fully optimized use of the Pixel Qi screens reflective abilities where the screen only needs to refresh at the speed of 1hz when in e-reader mode when nothing moves on the screen, with the processor and motherboard also completely shut off and standby to save power when they are not required. But where screen refresh rate and the processor and motherboard can instantly be turned on as soon as they are needed again.
Imagine wireless data technologies based on White Spaces, for free unlimited wireless broadband on the 700mhz spectrum, WiFi Mesh networking and maybe even low power Bluetooth built-in.
Imagine a touch screen technology which would allow for very responsive touchscreen interfaces to accommodate reading, web browsing, typing and playing of games. Yet where the touch screen functions on a plastic screen that is scratch resistant.
All that for $75 and to be released within two years. Those are the latest plans from the OLPC organization, the same people that invented the Netbook industry as I wrote in http://www.olpcnews.com/commentary/impact/olpc_netbook_impact_on_laptop.html