Hi all, I opened a thread to talk about GPU OpenSubdiv acceleration (and a couple extra features), if you want to try it out. I was forced to rewrite the implementation, so there is one expensive computation that still is done on the CPU, however it is cached and only reevaluated when the topology changes (e.g. adding or removing an edge loop) so only Edit Mode is really affected, Pose Mode should be fine.
Unlike in my previous post in this thread, the subdivision settings are back in the modifier. Putting them in the mesh datablock will be done later.