Gateway's announced a widescreen format Tablet PC - cool design, and it has dedicated ATI graphics, which should be nice in the Vista world of Aero Glass. PC Magazine has a review here:

"The CX200 is a workhorse: It's loaded with the fastest Pentium M (770) processor currently available, 1GB of RAM, and the ATI Mobility Radeon X600 graphics chipset. Unfortunately, the system couldn't run our SYSmark 2004 SE and MobileMark 2005 benchmark tests because of the tests' limitations, but other systems with this type of configuration perform very well on day-to-day computing tasks. Both the Doom 3 and Splinter Cell games ran smoothly. The 3DMark 2005 scores were very respectable at 996 (1,024-by-768), something rarely seen on a tablet..."