Intel shows running 32nm chips.

[Shintai]

Do you happen to know if the socket is going to stick around? Since they have a separate socket for i5, that would make it the shortest-lived socket ever if they ditch it...

LGA 1366 and LGA 1156 will continue. 45nm 4C/8T i5 owners will go down to 2C/4T 32nm. But LGA1366 owners will get cheaper chips with 32nm.

So still 2 sockets.

What kind of slot is that one in front of the RAM?

Its Intel TurboBoost. (Flash cache for HDs). And its a laptop thing. Its also known as Robson. Old tech so to say.

is there a 32nm shrink of penryn core2 arch, or any other 32nm dual core... or is everything from here on nehalem / IGP based?

Only Nehalem. Or rather actual Westmere. Core 2 stops at 45nm like i5.