The new AM3 r2 Socket which was already reported back in November 2009, has been confirmed that it will support the upcoming AMD's Four to Eight Core Processors.
The New CPU's will use the AM3 r2 Socket and is still not known whether they will be compatible with the AM3 socket. This is due to the AMD's 990 chipset which is in works, while there were early reports that the new Bulldozer core will be compatible with the 890GX/GX chipset.
The new Bulldozer core will be based on a 32Nm Process, Either Quad or Eight Core (six core is also possible), 8MB L3 cache, DDR3 1866 support. The first CPU to be based on the Bulldozer core is codenamed Zambezi which is planned for 2011, Although there is no other information.