= Highlights == PromiseType removed from JavaScript adapter The promiseType init option has been removed from the JavaScript adapter. Instead a promise that supports both native promise API and legacy Keycloak promise API is returned. This allows gradually migration of applications from the legacy/deprecated API to the native promise API. = Other improvements == Reverted breaking API changes to LocaleSelectorSPI In 9.0.0 a breaking API change was introduced to LocaleSelectorSPI. With 9.0.1 the changes to this API is now reverted, and a new LocaleUpdatorSPI has been introduced.