Earlier this month we reported that the X.Org multi-touch work was nearing completion
and now this work is getting even more readied for X.Org Server 1.11
once its merge window opens in February. Daniel Stone has today put out a fourth version of these X patches that provide proper multi-touch support to Linux and other operating systems running X.Org.
The fourth version of these multi-touch support patches clear up feedback generated from earlier revisions and touch not only the X.Org Server but inputproto, libXi, X Input, and xf86-input-evdev too. The multi-touch work had stalled for a bit, but Daniel Stone is back working on this code
Multi-Touch in X.Org is to be part of X Input 2.1
and should be officially introduced with X.Org Server 1.11 in the summer of 2011. There are though some stopgap solutions for multi-touch to be found in Ubuntu 11.04 and other Linux distributions until the proper support lands upstream.
Those interested in the Git tree information for this work and the technical discussions among the open-source input developers, see this mailing list thread