This afternoon Jakob Bornecrantz has pushed out this initial Gallium3D driver for use in VMware guests. This driver is called the VMware SVGA driver and can be found in this Git commit, which adds 30,000 lines of code to Mesa's master tree.
VMware's Gallium3D driver requires X Server 1.7.x and the vmwgfx kernel driver. The VMware graphics kernel driver is being published tomorrow. VMware hopes that vmwgfx will make it into the mainline Linux 2.6.33 kernel. To use this driver you will also need to be using VMware for your virtualization needs.
This VMware Gallium3D driver stack is considered as being "production ready" while the kernel driver and DRI/X.Org state trackers are considered "beta quality" for the time being. VMware is looking to stabilize both of these state trackers for Mesa 7.7. If the release schedule is met, Mesa 7.7 will be released by Christmas, which would be very exciting with the first two production quality state trackers for Gallium3D.
We will be testing out VMware's Gallium3D SVGA driver in the near future.