According to what appears to be a leaked roadmap over on Expreview, AMD will only have a single AM2+/AM3 processor in the shape of the upcoming Deneb quad core. The future cores, coming sometime in 2009, are currently code named Propus for the quad core, Heka and Rana for the triple core and Regor for the dual core and neither seems to support anything but the AM3 socket.

With two quad core and two triple core processors, you might wonder what the difference is and so far the only thing we can tell is that Deneb and Heka supports shared L3 cache, something that Propus and Rana doesn't appear to feature.

The L3 cache should allow for slightly improved performance for Deneb and Heka over Propus and Rana, especially in cache intensive applications. Regor will feature 1MB of L2 cache per core and we have a feeling that AMD will be offering a selection of cache sizes on its new processors, just as it's doing with its current line-up.

The good news is that all processors including the Deneb FX will offer support for both DDR2 and DDR3, although time will tell if we'll see any combo boards with support for both types of memory or not. With DDR3 pricing still being quite a lot higher than that of DDR2, it might be some time yet before we see DDR3 prices coming down to more reasonable levels, despite Intel's best efforts to try to make DDR3 the mainstream solution.

With support for both types of memory, AMD is not going to be as sensitive to memory pricing as Intel will be with its Core i7 platform and the upcoming Lynnfield and Havendale processors, all of which can only use DDR3 memory. Let's just hope that AMD can regain some of the performance it so badly need right now to compete with Intel on more equal terms.

You can find the roadmap here