I noticed that too, was opening the msi to Edit and thinking I was going mad! Still changed those items that didn't state 2008 for the full install.
I'm still not getting full hardware acceleration though which is killing my cunning plan to combine my WHS 2011 server build as a Blu-Ray player (small chenbro case, whisper quiet and power sipping AMD Fusion board). My AMD Brazos E350 is capable of full Blu-Ray playback but only if the GPU acceleration/UVD is fully utilised.
Any ideas? Using the AMD System monitor the GPU does appar to get some use but the CPU is at 80% and thus I get stuttering. Could be an Arcsoft Issue but I can't even get Cyberlink to launch on 2008R2 so can't test that.
At the moment I using Media Player Classic & SPlayer they both seem to be using DXVA. I haven't used Arcsoft or Cyberlink, so I wouldn't really know. I just notice it too for some reason when playing any DXVA files it doesn't the GPU load is @ 0% using GPU-z monitoring, but it when I check the codec status it say it using the GPU and my CPU usage is at constant at 4-8% load when playing 1080p video. I think AMD might messed up on the GPU monitoring.