Adds support for upcoming Zen 2 processors. It's also near 2MB larger than previous BIOSs. According to the article some manufacturers are using 0070 and some are using 0072, and that another update to 1.0.0.0 may be inbound shortly before or after the Ryzen 3000 series gets on shelves.
https://www.tomshardware.com/news/motherboard-bios-update-amd-ryzen-3000-cpus,38872.html