I wanted to know the same thing. I've tried to find some info online but there is no current info about it, not even on Intel’s site.
From what I've seen it's just as you and Hunter315 said, it looks like just a multiplier boost 2.66 to 2.8. Although on NewEgg in the specs it says it supports HyperThreading...I don't think this is true, due to the fact that all the i5 series do not support HT.
I was going to be purchasing an i5-750 as well and planned on OC to support my RAM choice to get them to run at their rated timings. It seems even if I were to get the i5-760, then I would still have to OC it to get the RAM to run as stated.
Also, wouldn't we still be limited for OC since it’s on the 1156 socket, don't they start to burn up somewhere after 4 Hz?
So 750 or 760, wouldn't they OC to the same levels due to the limitations of the 1156 socket?
One more thought; didn't Intel just do this with the i7-920? They release the 920 then a few months later they release the 930 with a slightly higher clock speed?
For $15 more for a small increase in speed, which you could do yourself (and why wouldn't you?) so, is it worth it? Maybe, too soon to say; but for those who couldn't decide between the 920/930...was it worth it to get the 930? Odd thing is that the 920 is $5 more than the 930 currently.