What pray tell is going to be outdating the 3930K soon? Oh, you must mean Ivy Bridge. lol. Yeah, don't hold your breath. There won't be a single IB chip available that's going to touch the 3930k.
IB at best is going to be a 10-15% increase in performance of SB.
http://www.cpubenchmark.net/cpu_lookup.php?cpu=Intel+Core+i7-3930K+%40+3.20GHz
Not exactly the kind of improvement it's going to take to catch these 6-core beasts. Even
if somehow a simple die shrink does push IB to the 40% gains required, you'd still be stuck on the exceptionally limited 1155 platform vs 2011.
3930K is quite simply the best overall performing chip on the market today (minus it's 3960X overpriced brethern) and until IB-e ships, that's not going to change.