The subreddit is also home to many non-animated game icons, which can come in handy. If you scroll trough your Steam library, you'll probably notice dozens of games that haven't gotten updated ...

Microsoft is experimenting with various UI improvements for its operating system. Users discovered that the latest Windows 11 Dev build contains hidden animated icons in the Settings app.

That logically lead him to deduce that starting with Android O, the Clock app's icon will be animated to show the current time.