The next bios was released on the 27th of Octomber, next one in December and so on...
Now use your brains man ... any motherboard manufactured from december 2020 onwards will most likely be equipped with at least bios 1.40 from factory.
So use those brain cells of yours and think about ... was the motherboard I plan to buy sitting on the shelves of the company since December of last year, or were so many motherboards imported by the distributor that you'll end up buying a board imported in December?
It's a popular, cheap, mass produced motherboard, so I seriously doubt it.
I'd say it's 80-90% probability you're gonna get a motherboard produced in 2021, with a more recent bios installed.