A lot of info level logging has been changed to debug. Also, a realm no longer has the jboss-logging audit listener by default. If you want log output when users login, logout, change passwords, etc. enable the jboss-logging audit listener through the admin console. logout REST API has been refactored. The GET request on the logout URI does not take a session_state parameter anymore. You must be logged in in order to log out the session. You can also POST to the logout REST URI. This action requires a valid refresh token to perform the logout. The signature is the same as refresh token minus the grant type form parameter. See documentation for details. LDAP/AD configuration is changed. It is no longer under the "Settings" page. It is now under Users->Federation. Add Provider will show you an "ldap" option. Authentication SPI has been removed and rewritten. The new SPI is UserFederationProvider and is more flexible. ssl-not-required property in adapter config has been removed. Replaced with ssl-required, valid values are all (require SSL for all requests), external (require SSL only for external request) and none (SSL not required). DB Schema has changed again. Created applications now have a full scope by default. This means that you don't have to configure the scope of an application if you don't want to. Format of JSON file for importing realm data was changed. Now role mappings is available under the JSON record of particular user. DB Schema has changed. We have added export of the database to Beta 1, but not the ability to import the database from older versions. This will be supported in future releases. For all clients except bearer-only applications, you must specify at least one redirect uri. Keycloak will not allow you to log in unless you have specified a valid redirect uri for that application. Resource Owner Password Credentials flow is now disabled by default. It can be enabled by setting the toggle for Direct Grant API ON under realm config in the admin console. Configuration is now done through standalone/configuration/keycloak-server.json. This should mainly affect those that use MongoDB. JavaScript adapter has been refactored. See the JavaScript adapter section for more details. The "Central Login Lifespan" setting no longer exists. Please see the Session Timeout section for me details. SkeletonKeyToken, SkeletonKeyScope, SkeletonKeyPrincipal, and SkeletonKeySession have been renamed to: AccessToken, AccessScope, KeycloakPrincipal, and KeycloakAuthenticatedSession respectively. ServleOAuthClient.getBearerToken() method signature has changed. It now returns an AccessTokenResponse so that you can obtain a refresh token too. Adapters now check the access token expiration with every request. If the token is expired, they will attempt to invoke a refresh on the auth server using a saved refresh token. Subject in AccessToken has been changed to the User ID. DB Schema has changed. We don't have any data migration utilities yet as of Alpha 2. JBoss and Wildfly adapters are now installed via a JBoss/Wildfly subsystem. Please review the adapter installation documentation. Edits to standalone.xml are now required. There is a new credential type "secret". Unlike other credential types, it is stored in plain text in the database and can be viewed in the admin console. There is no longer required Application or OAuth Client credentials. These client types are now hard coded to use the "secret" credential type. Because of the "secret" credential change to Application and OAuth Client, you'll have to update your keycloak.json configuration files and regenarate a secret within the Application or OAuth Client credentials tab in the administration console.