Link for another Source http://netkas.org/?p=243
Myself, I have tested it only with X3100 and thats works for sure in 64bit Mode with QE/CI/OGL, but the GMA 950 Files are compiled for 64bit too.
AidenShaw might be right; it would make sense given that it will be atleast 3 1/2 - 4 years since Yonah was released. Although, what are they going to do for those with 32bit EFI? provide a firmware update? from what I understand, there is nothing technically supporting EFI32 from loading a 64bit kernel except for Apples artificial limitation placed on it.
The downside is, however, I'm still waiting for EyeTV to get their act together to provide a 64bit driver. I hope that they won't charge customers for it because it would be a real mood killer.