Well, I’ve just finished installing SQL Server 2008 R2 and Microsoft Dynamics 2010 R2 on the Windows 8 Developer Preview and GP is exactly like it is on Windows 7.
Installing SQL server was slightly easier than normal as I didn’t need to install third party virtual drive software, but simply right click on the iso and select Mount;
Once mounted the iso becomes available as if it were a standard DVD drive;
Microsoft SQL Server 2008 R2 Setup detected the absence of the required .NET Framework and prompted to install the .NET Framework Core role, I think phrased more like Windows 2008 Server than Windows 7;
The rest of the SQL Server installation went as normal and I then moved onto installing Microsoft Dynamics GP 2010 R2;
I encountered no problems whatsoever with either installing or running Microsoft Dynamics GP 2010 R2. My natural cynicism had me thinking that there was going to be some sort of issue, but none.