To everyone's surprise, Toot! v17.0 is out!

https://toot.to/

This is the first in a series of releases that implement support for new Mastodon features. More will come in the near future, but this version offers:

* Full support for all new types of notifications in Mastodon 4.0, including admin notifications.
* Updated to use more modern versions of various iOS functionality. As a result, however, the minimum supported iOS version is now 13.
* Bugfixes.