Windows Central UWP app - Improvements and Fluid Design redesign?

[Cryio]

Hello. When the UWP app was launched, it got features and bug fixes quite quickly. But this was back in 2016. Since then, updates came rarely and the app is woefully buggy today.

Are there more updates coming? Bug fixes, design improvements, new features? I assume we haven't seen any Fluid Design redesign so far because the app is so heavy as it. In the Store, it states it requires Anniversary Update, so it's easy to assume the app uses nothing from the APIs from Creators or Fall Creators Updates, be it on phones or PC.