The first thing you will notice is that #Tusky got a new app icon. It was designed by @dzuk

But of course there is a lot of other changes as well:
With #Tusky 20 you will be able to set the focus point on images and follow hashtags.
The media tab on profiles has been improved a lot, and Android 13 is now officially supported.
And of course a whole lot of bug fixes which should make Tusky 20 more stable than any version before.