I don't see why that would occur. 915 is some of the best graphics hardware from Intel. The only problem would be if Microsoft refuses to include it with Windows 8. Looks like a problem with the installer or infs need to be changed. (Like Voodoo 3 with XP)
Intel may come out with them in a matter of time, a lot of people are in the same boat. You think that just because the newest OS is on the shelf that major vendors would support, If you you think that you are badly mistaken. Its only a matter of time before big vendor like Intel drop complete support for older products like that. The Intel GMA 900 series is about 8 Years old already so I wouldn't hold your breath.