I believe official stance from AMD is that all AM4 boards should support Ryzen 3000, but it's up to Gigabyte to release a BIOS update for that board to add support. I'd say it's pretty likely.
exactly, i seen a story going around where MSI was looking to stop supporting some of their older AM4 boards but they backtracked on that decision
https://www.pcgamer.com/msi-wont-be-blocking-ryzen-3000-support-on-all-older-motherboards-after-all/