Astak has updated their website with a full page of information for the Mentor. See it here:
http://astak.com/e-book.html
To answer Gester's question, the 9.7" model is the only one which is described to have a touch screen that uses a stylus. The 6" lists the touch screen as optional but with no other information. As for the 5" model there is no touch screen option.
P.S. to whoever wrote this, it's "Parlez-vous français?"
Typographical errors aside I really do hope that the guys at Astak succeed and deliver on their promises. If the price for the 9.7" really is ~$350 you can sign me up for two. There's no way that I'll be sharing mine with my girlfriend