Apparently these CPUs will overclock better than Kaby. Time will tell I guess, they may be soldered. Still stupid though, like nearly all of Intel's low end HEDT CPUS.
Take the 3820 for example. It cost more than the 2600k, didn't overclock as well and you needed a £300 (at launch) board for it ! Then they cracked out the 4820k, more of the same. They only really changed that with the launch of the 5820k.