I would like to add to this thread by saying I am having similar issues.
I recently purchased the DZ87KLT-75K motherboard and installed the i7 4770K CPU.
I purchased the Corsair Vengeance 32GB (8Gx4) kit (CMZ32GX3M4A1866CP).
Upgraded BIOS to the official 0445.
Invoking the XMP profiles solved the problem of the board recognizing the speed of the memory, but similar to others, I get the three beeps if I try to install memory in to all 4 DIMM slots.
Slots 1 and 3 on channel A work fine. Pop memory in to slots 2 and 4 on channel B and without fail, three beeps and the A6 post code. I've been through the usual steps of re-seating the memory, iterated through different sticks, etc. No luck. Also, I don't think it's bad memory. Second kit gave same results as first kit.
I am following this thread closely. Any updates on the BIOS issues would be great.