loneninja :
About the only thing known is what came from AMD's roadmaps. AM3r2 socket with DDR3 memory support and up to 8 cores to release some time in 2011. Most everything else is speculation, and unconfirmed by AMD.
Which roadmap/news source have you seen that says AM3r2 socket in it?
All i seen out of the news and the road map (the current one that im aware of is this one back from the end of last year) hasn't said anything about AM3r2...
As for you're question badboyeee
so will current AM3 motherboards be able to support AM3+ / AM3r2??
Would AM3 motherboard be they be able to use AM3+/AM3r2 if such a socket/cpu comes out. Most likely but we cant be positive on the situation at the moment.
Lets hope at this Hotchips conferance AMD spills more beans about bulldozer.
http://foldingforum.org/viewtopic.php?p=153843#p153843
By the way, AMD will be talking more about Bulldozer this month at HotChips conference at (well well) Stanford Uni on 22-24th of August. They will talk as well about Bobcat and Llano.
So much exciting stuff coming end of this year- start of next hopefully software devs are getting ready for them.
If they do, we might be able to say yes, no, or whats a AM3+/Am3r2 socket
......