The guys and gals at Arctic cooling must have a had a whoops moment as they accidentally leaked a bunch of processor model numbers of Intel's upcoming Haswell-based LGA1150 processors. The list below contains model numbers of nine Core i7, seventeen Core i5, five Core i3, and two Pentium series models. The list of LGA1150 processor models appears to have been leaked in the data-sheets of one of its coolers, in the section that lists compatible processors.
From the looks of it LGA1150 will have the exact same cooler mount settup spacing as LGA1155 and LGA1156 sockets. So of you already have a good cooler, there will be no need to upgrade.