I think AMD needs to get their heads out of their asses and settle on some sockets for a longer time.
Socket A was OK for a long while, then we had a short period of 940 FX's and 754 then 939 and now M2.
Those who bought 754 have little upgrade path, those who got 940 FX's are screwed, 939 is still OK for a while (dual core is coming), but AMD want to change AGAIN.
Barely enough time for mature and decent chipsets to get developed either 🙁
Although a different socket for mobile CPU's will be both good and bad.
Smaller = better, but it means no more desktop/mobile chips unless someone makes an adapter 🙁