ownCloud 5 is out and updating should be no big deal. Simply hit the update button, follow the usual instructions and install ownCloud.
After the installation is finished browse to your ownCloud page (click the DSM link) and wait for the update to complete (this takes another few seconds…)
It is already online in my Dropbox Folder
The repo will be online soon.
Now: Fixing Subsonic package again =(…