i7Baby :
It says unleash 4th and 5th generation on Z97 - Haswell and Haswell refresh
"Unlocked Freedom
The combination of the Intel Z97
chipset and the new unlocked 4th gen
Intel Core processors allow you to
unlock your system’s ultimate perfor-
mance. These capabilities allow you
to change the core, graphics, and
memory frequencies without having
to run any other part of the system
above specifications.
With the new unlocked tuning capabilities of the
4th gen Intel Core processors and the
Intel Z97 chipset, your PC experience
is unleashed with flexible performance."
Referring to the new unlocked capabilities of 4th gen...leads me to think that the Haswell refresh is just a maturity step. Otherwise it would throw the naming scheme off and making Broadwell 6th gen with 5k series numbering?