We're very pleased to announce that Red Hat is working on a commercially supported version of Keycloak. At the moment we can't give any details around product name, release date or subscription model. What we can tell you is that the supported version will be based on Keycloak 1.9.x.
Rather than working on new features we're currently focusing on performance, bug fixes and general polishing. We will be releasing minor releases of 1.9.x every few weeks going forward. This means that we highly recommend you upgrade to 1.9.x now. It will get continuous fixes, including security fixes, until the commercially supported version is ready. Going forwards we'll also be very unlikely to answer questions or help with problems unless you've upgraded to 1.9.x. We'd also appreciate all the review and feedback we can get on this release. We want to make it as good as possible.