The PR for Wildfly 13 upgrade is finally ready to review - https://github.com/keycloak/keycloak/pull/5293 . Few things to highlight for this PR: - Dependencies of undertow, infinispan, resteasy and aesh and some others were updated to use the versions used by Wildfly. - Some configuration changes are needed in infinispan Wildfly subsystem (Removed jndi-name from cache-container element, Replaced "eviction" element by "objects" element in the configuration of caches, ...). This is all documented and described in migration guide. Also migration scripts were updated to reflect all of this and automatically update configurations of standalone and domain configuration files. Server-config-migration-tests is passing - For Cross-DC, infinispan-server used is now infinispan-server 9.2.4.Final (same infinispan version like Wildfly 13 is using) and JDG 7.2. It was a bit of pain, but finally cross-dc tests are passing fine with both infinispan-server-9.2.4 and JDG 7.2. The PR contains some changes especially in the keycloak-model-infinispan part as updating infinispan wasn't so straightforward. Few things to note: -- Some API changes and deprecated methods in infinispan, which we need to adapt too -- For cross-dc, we don't use JDG '___script_cache' anymore for preloading sessions. It caused some issues in the past related to security. Also there seem to be a bug in JDG 7.2, which prevent it to work correctly. We know use "remoteCache.retrieveEntries", which was improved in infinispan 9 and allows great performance and preloading sessions in parallel. Was trying to test preloading with million sessions in JDG and it took just around a minute on my laptop - There is still the issue that keycloak-admin-cli and keycloak-client-registration-cli use the old aesh. I've created https://issues.jboss.org/browse/KEYCLOAK-7737 . Fortunately old aesh is not needed as Wildfly module, because the "fat" jars "keycloak-admin-cli" and "keycloak-client-registration-cli" just contains it's classes (as well as the other dependencies) contained in itself. IMO this is not a blocker to upgrade master to Wildfly 13 now and it can be addressed later. But will be good to address this (EG. if there are security and other issues in old aesh, we won't be able to rely on Wildfly support etc). WDYT? - I've sent the PR for documentation last week https://github.com/keycloak/keycloak-documentation/pull/410 . But this one is not yet ready for review. I need to update it based on feedback from Matthew. Also need to update a bit the content as well. Hopefully will be ready for review later today. Marek