How long is typical for new socket mATX?

[boomhower]

What is a typical time frame for new sockets to come out in matx. I know it is pretty much a guess at this point but how long did it take for S775 boards to ship after there larger ATX brothers launched?

 

[iBPJohn]

It might take longer than normal since the first Nehalem will be high end versions only.