Actually, I quickly checked the code and it won't be so hard to make the glass working on Win8.1. The only big change (which influences my work) is complete migration of desktop rendering from DX10.1 to DX11 thus I need to rewrite my blur algorithm to Direct3D 11 API (which is very similar to 10.1). The biggest problem I see is the non-existence of glass safety zones which is the thing responsible for extending occluded regions by blur radius. It will make glitches (known from earlier versions of my utility) on the edges of the clip regions without glass safety zone.
Please let us know if there's anything specific you need. I have the Win8.1 x64 preview running, and can provide info/files/whatever privately.
Surprisingly, most every config tweak and 3rd party software package that works with Windows 8 (.0) seems to work okay with Windows 8.1, though there are occasional weirdnesses (for example, for some reason an auto-hidden Taskbar doesn't pull open if you put the cursor about where the ClassicShell Start button will appear). It seems Microsoft has conceded a few points - they've already configured several good things right out of the box that I advise people to configure.
But, who really thinks removing Windows Backup entirely was a good idea? It was encouraging to see them continue to offer it in Windows 8, and I might have expected a complete replacement by version 9, but removing it entirely in Windows 8.1? Ridiculous! I still need to be sure they haven't hidden it somewhere else.
I'm concerned about this "glass safety zones" thing you mention. Sounds like just more side effects from Microsoft migrating away from Aero Glass capability entirely, which spells long-term doom for just the kinds of things you're trying to do. Microsoft doesn't seem to have any smart folks working there any more, just mindless coders who follow the orders of drunken executives.
Edited by NoelC, 28 June 2013 - 09:46 AM.