The new version is a major release with lots of improvements and bug fixes. For the Datastore API, there’s additional metadata about datastores and records, and better error handling. The Sync API contains performance improvements including a configurable file-system cache size and batching of multiple file-system operations for faster syncing. You can read more about what’s new in the beta announcement.
We’re excited about the new local datastores feature which allows users to start using your app without logging into Dropbox first. However, local datastores is still considered a preview feature, so be careful and don’t use it in production yet.
Thanks so much to all our developers who reported bugs and gave us feedback! We appreciate all your help with this release. Please continue to share your feedback on the developer forum.