AMD's Bobcat and Bulldozer

[Mats]

Perhap they didn't want to unveiling any secret of bulldozer through the chipset & bios.

(I remember that there is an ASUS AM3 motherboard bios update several months before, inside the bios(source code or something else)there's a suspicious 8-core-cpu supply information.

It's possible, but in this situation they will lose customers to Intel instead, since now you need a new board no matter which CPU you chose. People expected that it would work with AM3, and now they're pissed off.
Besides, compatible BIOS wouldn't need to show up until next year, and they would still have this situation if the original AM3 would have been used with BD.

It's the worst of both worlds:
- BD doesn't work in AM3 boards, because they made a new socket, but
- It's still not a new socket, no LGA, no PCIe, no added memory channels, nothing. I'm not saying that AMD would add all these features in BD from the start, but they could've added the pins for future use.
AM3+ is mechanically the same as the seven year old original K8/Sledgehammer/Opteron/Athlon FX-51 socket 940, you can't fit any of those features into it electrically, you need more pins.

Now we're stuck with yet another AM iteration, which obviously will need a replacement quite soon anyway, because it will be outdated before it gets launched.