Intel Core i5-3317U in Surface Pro? The Verge predictions were (unfortunately) wrong?

Thurrott preview

So we have a CPU from april 2012. Just in time when updated new series of Core processors arrives. Microsoft, why?

Correct me if I'm wrong, but Intel introduced slightly refreshed line of Core processors on CES. Why not to use them in Surface Pro?!

TheVerge about CPU inside Surface Pro

So I guess ~5hrs of battery life is an absolute max. Probably less with more demanding tasks. Who needs a tablet with 3-4 hrs of battery when used heavily.

Core i5 3317U

Core i5 3339Y