Hey @peter75 ,
An update to the Multiball UI will no doubt come soon.
Animation I believe is one area that gets a major revamp in version 4.
Using the latest stable version is advisable when learning Blender, even better is to download the version used in the course.
Also using the latest stable version is best when creating your own work.
Alpha, Beta and even Release Candidate versions are used by developers to fix and test add-ons for example.
My advice is to stay away from anything but a stable version to avoid issues and potential frustrations, unless of course you are a developer.
