Since 63.1 was a hotfix, it carries over the major improvements introduced just days prior in version 63.0:
For the most up-to-date features and security, you can find the latest builds on the Sketch Releases page or view more details in the official changelog . 63.1 - Sketch Sketch 63.1
: Resolved an issue that blocked the saving or updating of Cloud documents when working in a shared team environment. Since 63