The full changelog can be seen below:
Restored Widget size on Lockscreen
Enhanced launching “Application info” in Recent apps by long pressing App icon
Fixed Flashlight won’t turn off (USA only)
Supporting Flashlight Brightness controller (only Note 7)
Select specific colors for all of the accent points
Fixed laggy issue in StatusBar, QuickPanel, Lockscreen, etc.
To install the upgrade, head into the Galaxy Apps Store, tap the search field, type in Good Lock, select the application presented at the top of the results page, then click the button entitled Update. Alternatively, you can download the APK by hitting the link below to manually load it onto your device.