It quite early info, but still official and very confusing and:

http://www.anandtech.com/show/2881

AMD refers to the module as being two tightly coupled cores, which starts the path of confusing terminology. A few of you wondered how AMD was going to be counting cores in the Bulldozer era; I took your question to AMD via email:

Also, just to confirm, when your roadmap refers to 4 bulldozer cores that is four of these cores:

http://images.anandtech.com/reviews/.../bulldozer.jpg

Or does each one of those cores count as two? I think it's the former but I just wanted to confirm.

AMD responded:

Anand,

Think of each twin Integer core Bulldozer module as a single unit, so correct.

As said before, maybe AMD is happy to begin with a dual (two modules), tricore (three modules, one inactive) and a quadcore (4 modules) bulldozer and see the extra integer cores as "extra execution power" like Intel's Hyperthreading technology.

Interlagos dual 4 module MCM cpu will be a server Opteron part, but maybe also the hexacore (two Bulldozer dies with one inactive module) and eightcore (two fully Bulldozer dies).

Much talks for it, and much against it! One month left to go.