AsRock AM3 M3A790GXH/128M - Can it be true?

[Lightman]

Not remotely possible. No AM2 or AM2+ proc supports DDR3 yet (only Deneb will). AM3-procs fit in Socket AM2(+) but it doesn't work the other way round.

Well, that's what we've been told for a long time now.
Recently though I'm hearing more and more hints to the opposite

I know it doesn't seem likely, but just look at the socket. First we heard that AM3 will be 938 pins which would automatically locked older AM2(+) 940pin CPUs from fitting into it. Now we know that AM3 is 941 pin and there is nothing physically holding older AM2(+) processors from being plug into it....

I hope 9 Jan we will know for sure