It has nothing directly to do with vlc, when vainfo (which works with every other gfx card) does not work then vdpau can not work too. It is just a very simple test which shows the codecs which are supported.
You sure that it's the drivers that need fixing or vainfo? The reason that I ask is that vdpauinfo still works without issue.
I like the fact that they have a crippled stereo-3d implementation, sort of. Or even just the fact that they're actually doing something about the lack of stereo-3d on linux, even if it's only for running 3d in 2d.
Now we just have to see CUDA added to Mplayer and all the other applications. Unless we have some third-party party application that will do CUDA acceleration. Hopefully this will help the issues with Compiz and it's incompatibilities with VDPAU.
No I think we have to see OpenCL added to mplayer etc. CUDE only works on nvidia gfx's, but OpenCL works on almost all vendors.