So here's a list of Haswell parts

[Rbstr]

"Leaked" via VRzone

Interesting stuff. A bit less than a 10% increase in TDP, so there's a good bit of extra area I'd assume as clock speeds aren't going up.
A good bit of that is probably in the graphics...so it may be a resounding "who cares" for most of us.

I actually doubt real power consumption is going to go up though, especially in non-gaming loads, given the emphasis of the architecture and "Hurry up and Go to Sleep" stuff.