Visual Studio 2010 not compatible?
You can upgrade to Windows 8 from Windows 7 with Visual Studio 2010 using a Retail Install disc only.
If you try to upgrade using the upgrade paths (that cost less then the retail disc) you will get presented with this kind of screen.
With some collaboration at MSDN bug was submitted but the response only talked about installing GDR to improve test tools for VS2010 in Windows 8
I have spent allot of time trying to find information on this. I did not have a Windows 8 disc or upgrade key. So I got one and upgraded Windows 7 with Visual Studio to Windows 8. (Oh - had to delete my hard work.) So read it here instead.
End of the day you can just carry on with the upgrade. It does not mean it will fail. You might have to tweak some things on the other side.