A report from Hungarian site HWSW has a close-up photo of the new AMD AM4 processor socket, and it looks like this will have 1331 pins per the report. (We did not count!)
Image credit: Bit-Tech
AMD’s newest AM4 socket will support both New APUs and FX series CPUs, unlike the previous generation which split the two between AM3+ and FM2+. This is great news for system builders, who now have the option of starting with an inexpensive CPU/APU, and upgrading to a more powerful FX processor later on – with the same motherboard.
The new socket will apparently require a new cooler design, which is contrary to early rumors the AM4 socket would be compatible with existing AM3 cooler mounts.