A blogger, who goes by the name of asder00, has leaked some slides of Intel's Roadmap for 2013/2014. The Roadmap doesn't reveal anything particularly surprising for the Extreme series of processors, though it does show some interesting developments for the Premium and Mainstream series processors.
First, it shows the existence of an Intel Core i7-4771. What we expect is that the Core i7-4771 will be the successor to the current i7-4770. This is because the Core i7-4770K is currently an extra 100 MHz faster out of the box over the non-K version of the CPU. The idea is that the i7-4771 will have the same stock clock speeds as those of the i7-4770K -- 3.5 GHz. This CPU is expected to be released in Q3-2013.
Another interesting bit in the slide is the indication of a "Haswell Refresh," which appears to be scheduled for Q2-2014. It remains unsure what this would entail, though it seems likely that the chips will still feature the same 22 nm tri-gate architecture, with nothing more than a couple of changes to clock speeds. What another slide shows is that the Z97 and H97 chipsets will launch along with the Haswell Refresh, though no details of this have surfaced yet.