Sync for iCloud Drive’s name has now changed to Sync for iCloud following addition of iCloud Photos support.
As of Release 2.5, Sync for iCloud now supports synchronisation for iCloud Drive and iCloud Photos.
To be able to access your iCloud Photos, iCloud Photos must be enabled from an iOS device. For more information, please visit Apple’s support page.
The release also includes updates to the user interface, several bug fixes and performance improvements.