Docu update to V6 offline

The docu for updating to V6.0.0 is offline? https://pimcore.com/docs/5.x/Development_Documentation/Installation_and_Upgrade/Upgrade_Notes/V5_to_V6.html brings error 404? Does anyone know, why this document is offline?

THX

The complete v6 documentation is now online and you can find it there: https://pimcore.com/docs/6.x/Development_Documentation/Installation_and_Upgrade/Upgrade_Notes/V5_to_V6.html