It has been announced some time ago. Shortly the latest App-V 5 SP3 Hotfix Package 2 was released.
Two issues has been fixed.
- The first issue is about opening Office documents saved on a SharePoint Server
- The second issue that has been fixed was a user profile problem
All details about that App-V 5 Hotfix Package can be read here: https://support.microsoft.com/en-us/kb/3060458
Hint: Remember the way you installed the original App-V Client! If you used the .msi file, you will have to use the .msp file now to upgrade your client properly.