Ubuntu wants to go mobile. While no official announcement has been made, notorious journalist Steven J. Vaughan-Nichols announced
in his column that Suttleworth told him in an interview that he wants to focus on tablets and other embedded systems (smartphones, smartscreens, smart TVs, ...).
I wouldn't expect mobility to happen in next version (remember, it'll be an LTS), but I definitely expect Ubuntu tablets for the 12.10 version.
I remember Ubuntu started flirting with multitouch technologies around Jaunty (9.10). Unity is also clearly more tablet friendly than it is PC.
This article exposes some further analysis of the upcoming.