Robot Framework 6.1 is a new feature release with support for converting Robot Framework data to JSON and back, a new external parser API, and various other interesting new features both for normal users and for external tool developers. This beta release is especially targeted for tool developers interested to test the new APIs. It also contains all planned backwards incompatible changes and deprecated features, and everyone interested to make sure their tests, tasks or tools are compatible, should test it in their environment.
For more details see the [full release notes](https://github.com/robotframework/robotframework/blob/master/doc/releasenotes/rf-6.1b1.rst).