Thanks for following along! This is a tagged release (2020.710.0).
TextBox will no longer trigger sound effects
This is a fringe use-case, as the samples were never included with the framework, but if you happened to be providing them in your game resources, you will need to update your TextBox implementation to trigger them again. Check the osu!-side changes for an example of how to do this.
CachedModelDependencyContainer models must now only contain read-only fields
Mutating bindables of models attached to a CachedModelDependencyContainer can lead to crashes or otherwise unexpected behaviour, and is now disallowed.