This feature was approved at the 2011-12-19 FESCo meeting.

There was a question raised as to how this feature interacts with multi-seat, if at all.

Replying to [comment:1 notting]:

There was a question raised as to how this feature interacts with multi-seat, if at all.

No specific interaction with multi-seat, the two are orthogonal. Multitouch boils down to a set of new event types whereas multi-seat is a specific configuration. They can be combined where required.