How did you get Kies working? All I get is a message to use almost featureless Smart Switch.
Just got this update yesterday and it FIXES BATTERY DRAIN. Google play services no longer eat up to 20 % battery over night. It's now down to 1 % as it should have been.
It probably also includes the SwiftKey abuse fix that was announced a few weeks ago (can't confirm this since I replace the keyboard),