@Itix
It remains to be seen if what Varisys is building now, it's actually rev 2 or a "rev 2.5".
At AmiWest -October 2010- a rev3 mobo was mentioned but then they went hush hush.
I wouldn't rule out the possibility that the "finalized" rev-"2" board mentioned earlier, wasn't so finalized ending up in another revision.
I'm sure fine details about this will be divulged once there will be no more secrecy about the project.
Also consider they probably have a clause on the contract against defective boards, it is probably the Varisys guys that want a "proof" that what they will be building in numbers is good (with Linux at least), and therefore will have to be paid by A-Eon regardless if Aos4 runs perfectly or not.