It looks like Intel will only be launching two socketed LGA1150 Broadwell parts in June. Typically we see a full refresh, but this is not the case with Broadwell. It could be because Intel has large Core Haswell inventories that they still need to get rid of, that Broadwell could be to short of a stopgap between Haswell and Skylake, or BGA chips becoming more commonplace.
Intel will be releasing two processors for PC enthusiasts. These will both be unlocked and are the Core i7-5775C and Core i5-5675C. Both chips are quad-core parts and have TDP’s as low as 65W. The Core i7-5775C has a clock speed of 3.30 GHz with a Turbo Boost up to 3.70 GHz and 6MB of L3 cache. The Core i7-5675C on the other hand has a clock speed of 3.10 GHz with a Turbo Boost of 3.60 GHz and a L3 cache of 4MB. The Core i7-5775C does support HyperThreading while the Core i5-5675C does not.
Both chips have Intel’s Iris Pro 6200 series integrated graphics and have DDR3L-1600 memory support. These new chips will work on existing LGA1150 motherboard with a BIOS update.
Source: VR-Zone | News Archive

i5 3.1ghz with turbo boost of 3.6ghz .. meaning a total turbo boost speed of 6.7Ghz.. will be a popular chip, methinks, only time will tell, eh?
These actually sound slower than the i7 4790K, which has a maximum turbo of 4.4Ghz and the i5 4690K with a maximum turbo of 3.9Ghz. It’s not like Broadwell is only rumored to have a 5% IPC advantage over Haswell.
Maybe the real reason for only releasing 2 socketed chips is that while they run cooler they’ve failed to clock well enough to compete with Haswell on the desktop. On well, at least Sky Lake is just around the corner.