Callisto Professional 21-12 is a minor release to provide:

Fix for the Office 365 dashboard not rendering correctly. This is caused by changes Microsoft-side with new data being added to the table we read the data from. We have included this new info in the Office 365 version information table.

Updates to the way we populate the Client Health statistics in the device modal. These are now more up to date, so if you refresh a device hardware inventory (for example) the health stats will reflect the new inventory date immediately.

We have added an extension to the search schema to allow you to search for the Update GUID shown in the verbose client logs, this helps track down troublesome updates in the ConfigMgr environment, e.g.