The Intel Ivy Bridge-E CPU Roadmap and specifications have been detailed thanks to Chinese portal of VR-Zone. According to the leak, Intel Ivy Bridge-E based Core i7-4000 series is definitely heading for a Q3 2013 launch as was expected earlier.

Intel Ivy Bridge-E CPUs Leaked - Core i7-4960X To be Flagship Part

Intel is said to launch three Ivy Bridge-E variants in Q3 2013 which would include the flagship Core i7-4960X, Core i7-4930K and the entry level Core i7-4820K. According to VR-Zone, Intel Ivy Bridge-E CPUs would be based on the 22nm Tri gate architecture and would be compatible with LGA 2011 sockets with the X79 chipset or the rumored X99 chipset which is currently in works. The naming scheme used also matches the Haswell "Core i7-4000" which may get a bit confusing for consumers:

Intel Core i7-4960X

Intel Core i7-4930K

Intel Core i7-4820K

The flagship Intel Ivy Bridge-E CPU would be the Core i7-4960X packed with 6 cores and 12 threads and would feature a core clock of 3.6 GHz base and 4.0 GHz Turbo boost with 15 MB of L3 cache. The Extreme Edition CPU would cost $1000. The performance minded users would look forward to the Core i7-4930K with the same 6 core and 12 threads configuration however shipped with a lower core clock of 3.40 GHz base and 3.90 GHz with Turbo boost 2.0. The Core i7-4930K would feature 12 MB of L3 cache.

Last of all is the entry level Core i7-4820K which will retail around the $290-$350 mark. As you may note, this time Intel thought it was better off to ship their entry level HEDT CPU with an unlocked multiplier while the Sandy Bridge-E based Core i7-3820 didn't had an "K" unlocked design. Specifications wise, the Core i7-4820K ships with 4 Cores and 8 threads, 10 MB of L3 cache and 3.70 GHz base and 3.90 GHz Turbo frequency. You can already not that Intel would plan/launch faster variants of these processors which would ship only until Q4 2013 or 1H 2014. As for now, Intel is planning launch of their complete Haswell CPU platform on June 2nd 2013.