Intel would not bring out all the "big guns" in Broadwell enthusiast range. They will save lots of PCIe lanes for the Broadwell-E range in 2016. Therefore I would guess the i7 5770K or whatever it'll be called will have the same 16 PCIe lanes, 8, 10 or 12 MB Cache and a clock speed of around 4.0 - 4.2 Ghz base clock. Hard to know for certain but surely DDR4 will be supported. As well USB 3.1.