According to FUD Zilla most Taiwanese motherboard makers aren't impressed by AMD's Phenom processor and therefore they are focusing a lot more on motherboards for the Intel platform. AMD's 790GGX chipset will be released soon but according to FUD Zilla there will not be a lot of motherboards with this chipset as motherboard makers believe demand will be too low.
Some will announce an AMD790GX new integrated chipset that will be the fastest IGP ever made, but the manufacturers simply don’t see the necessity for many desktop chipset-based Phenom boards.
The reality is that the best engineers were assigned to the P45 project and they will quickly move them to Nehalem projects, while there are no big plans for new 790FX designs, at least not in the short run.
Once AMD comes back with better and faster CPUs, the cool motherboard designs will follow.