The road until the public release of Update 13 is still a far one, so i think it's best that you take something to help you along the way. How about a little teaser about what'll be new for it?
We'll have a cool new feature, and that is: Animations!
Few and far between for now, with only 2 tails if it all goes well, but of course gotta start somewhere.
Implementing it i noticed though that it might not be a feature that everyone will get to enjoy. Renpy is a bit of a bit of a fickle beast, and with the way it handles animation it just ends up eating a bit more resources than I would like it to.
So if you're playing on an old phone, or maybe an old netbook, it might struggle to really display them or load them quite slowly. So for those cases you'll of course have the options to either keep the animations running or just go back to the static tails as they are now.
But anyways, enjoy the new addition to the game!