AMD will be using a different scheme for classifying and naming its processors. The new model number scheme will consist of 2 letters and 4 digit numbers (example: AB-0000)
The FIRST LETTER will be the class/position of the product at the market:
G = Premium/High-end
B = Mainstream
L = Value
The SECOND LETTER will reveal the TDP of the processor:
P = above 65W
S = around 65W
E = under 65W
The 4-digit number indicates the relative performance of processors within the class.
The FIRST DIGIT indicates family of the product:
1000 = Single core Athlon and Sempron
2000 = Dual core Athlon
6000 = Dual core Phenom
7000 = Quad core Phenom
The SECOND DIGIT indicates relative clock speed within the product family.
The two remaining digits will be used for the future update functions.
Right now, AMD has two processors already using this scheme, the Athlon X2 BE-2300 and BE-2350. From the name, you should be able to tell that this is an energy-efficient mainstream part and that the latter is "better" than the former. In fact these are Athlon X2 processors with a 45W TDP and 2x512KB L2 cache with the latter clocked at 2.1GHz and the former at 1.9GHz.