It may well run but needs the update to work properly. Z97 and H97 are meant to support Haswell Refresh out of the box.
Back in the Athlon XP days, I had a processor recognised as something totally different, until I updated the BIOS.
I've got the Z87-D3HP and the cpu support doesn't mention a BIOS lower than version F4. When I updated to F7 recently, I discovered I was on BIOS F2.