ASUS M5A78L-M/USB3 bios question?

nope. only amazon does. If it's been sitting on the shelf for 3 years, then it probably has the oldest bios. If it just came in today from asus it will have the latest bios.

for your own sanity and wallet, i suggest you simply assume it comes with the oldest bios available unless you can specifically request a recent bios from the merchant.