if expected, Microsoft has made changes in Windows 8.1 Update ( April 2014) in OS, but also has renamed SkyDrive to OneDrive.

 

First changes you see in the Windows Explorer… 

 

in the context menu you are now allowed to interrupt the synchronization with OneDrive  to the cloud. Later on you may continue…

Also the modern app is renamed to OneDrive

 

If you have made your synchronization Off and start your modern app, you will be remembered…

 

 

in the option section within you OneDrive modern app there is a new switch to interrupt the synchronization or you may continue…