Notes have been deleted from AMD's site, but with the new feature driver being released in the next couple of weeks, they'll be restored then. Not particularly exciting for most people likely since Navi is required for DirectX 9, and quite likely won't have the wide range of configuration that nVidia has.
https://www.tomshardware.com/news/amd-accidentally-reveals-new-radeon-boost-and-integer-scaling-features-for-upcoming-driver
