Pokémon GO is in the process of being updated to version 0.61.0 for Android and 1.31.0 for iOS devices. Among the notable enhancements is an updated Pokémon collection screen scroll bar. Below are some official release notes and comments from the development team at Niantic:
- Added Traditional Chinese language support.
- Updated the Pokémon collection screen scroll bar.
- Various bug fixes.
- Minor text fixes.
Source: Pokémon GO blog