A detail removed from the I/O website suggests Google may be releasing a "next-generation UI framework for Android" in the near future, possibly at I/O.

Facebook has open sourced Litho, a framework for creating user interfaces in Android applications using a React-like declarative style with scrolling performance in mind.

Designing and implementing a user interface that can perform dynamically and consistently across a broad range of mobile devices is hard, ... Facebook Open-Sources 'Litho' Android UI Framework.

At its F8 developer conference, Facebook today announced that it is open-sourcing Litho, a declarative framework for building efficient user interfaces on Android.

At Google I/O today, the company announced the alpha version of Compose for TV, a framework that will make it easier to build attractive Android TV apps with less code and more intuitive tools.