Like my other friends, I too am enjoying improved battery life with KK. I changed my wallpaper to a slightly deeper shade to account for the white notification icons. I also ran a factory reset after the upgrade, considering this is a major release of sorts.
One thing though, I did not wait to be notified about the upgrade. I checked for it on Thurs AM (US Eastern time) and upgraded my GS3. I live near Cincinnati, Ohio.
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