Extension Manager v0.7.1 and Extension Repository v0.2.1 are now available
First the good news; the Rotel Volume/Source Control extension of Boris Schaedler is now included in the Extension Repository.
Thanks @Boris_Schaedler!
Second the not so good news; in the process of including the new extension I discovered a bug in the Extension Manager related to the reloading of the repository. This bug has been fixed in version 0.7.1 of the manager.
How to update
If auto update is enabled then the changes will be pulled in the next time the update is performed. It is also possible to update manually via the Settings dialog, select the Extension Manager from the System category and perform the update action, do the same for the Extension Repository.