1) F20a bios now supports ECC ram in the Master--the actual settings are in the bios now. Lots of new stuff under AMD CBS--a ton. Some cool things I haven't had time to really look at.
2) Gigabyte now has three revisions of the mboard...1.0; 1.1; 1.2
Looks like the F20a bios now extends the practical support of ECC all the way back through revision 1.0, which is my mboard. Bios settings are all there.
That's really nice as a few people have been asking about that all year now and then.
The only thing I can spot for revisions 1.1 and 1.2 that is different is the Thunderbolt card connector. There may be some other things, possibly. I'm running F20a now and I can say it is without a doubt the best bios I've used yet--and I've used all of them, beginning with F3.
What a great mboard--very happy with my choice!