Hi Kenja444,
I would suggest you first read up what the real changes are in the new bios. Thus what codes the changelog say about it. On my formula I have had the 3 different bios versions and I have not been able to detect any difference. I simply had to upgrade due to putting in the 4790K instead of a 4770K
Its not that latest is the fastest always as changes often relate to bugs that might not even show up on your setup ever.
It started with a VIC-20... and now it is. Maximus Formula VI Intel 4770K 4.6GHz ASUS GTX780Ti 3GB Corsair Platinum Dominator 16GB 2400MHz Raid Express 240GB Samsung EVO 512 GB SSD Corsair 900D EK watercooling Corsair RM1000 ASUS PB278Q