This arrived in my mailbox today
4.2.0 beta1 has been released.
This release includes many enhancements to versioned and graphql, including a new major version of the graphql module (2.0).
We have also overhauled HTTP caching, and greatly improved the security of unpublished content.
Please follow the below links for additional help and information:
To get setup with this version of SilverStripe you can install this with the below composer command:
composer create-project silverstripe/installer ./ss42 4.2.0-beta1