Based on the release of the manual the most interesting question is: will the multi touch features work in Windows 7?
Update: Thanks to a comment I found the beta package over at n-trig.
BUT it doesn't support 64bit and no pen support (=no Math Input Panel!!!)
Yes, they will work.
The Latitude XT2 uses the same touch panel from N-Trig as the XT.
N-Trig already released multitouch beta drivers for Windows 7 for the XT that will also work on the XT2.
Furthermore, Microsoft is working closely together with N-Trig and supporting them with several million dollars.