After some chatting in #xorg-devel this week to follow up on the status of the long-awaited relative mouse movements, I have an announcement:
Relative mouse movements will be in XInput2, and XInput2 will be in the next x.org release. This new release will be coming out roughly in the same timeframe as Wine 1.2, which makes relative mouse movement support very feasible for our coming release.
If you want to test out a GIT version of XInput2 so you can get to work, you can check out the instructions at the bottom of the DInput page in the wiki: http://wiki.winehq.org/DInput
whot (from #xorg-devel) told me that if we need any API changes to do this right, we can ask him. Now is the time.
Thanks, Scott Ritchie