I just received word from N-Trig that on Wednesday they will be announcing enhancements to their DuoSense single capacitive touch to include multitouch capabilities. The word from N-Trig is that this will be available for OEM integration in May 2008. This is will be a software / firmware upgrade to Tablets with N-Trig digitizers. I asked N-Trig about support for current Dell XT Latitudes, and they told me that it will be up to OEMs to decide how to distribute the software upgrade to support this new multitouch enhancement. It is not currently in the XT Latitudes. Given the pricing of the XT, I’d expect Dell to offer this as a free firmware upgrade.
They have released a YouTube video demonstrating this new capability ahead of the press release: