In the last days, a new version of Xserver has migrated to testing, Brice Goglin blogged about the upcoming migration with some details a few days ago.

This is the first update of Xserver in testing since May 2008, and it is a major upgrade from the previous version. You are encouraged to read /usr/share/doc/xserver-xorg/NEWS.Debian.gz (read online here) to avoid problems and before reporting bugs.