I tried to track own this answer for the last 2 weeks. Several calls to samsung, a visit to the samsung experience guys at BestBuy, several calls to ATT, an att store visit. I invested at least 6-8 hours of my time between calls, online chats and personal store visits. Got the run around by everybody. No one is on the same page, and some just come right out and say it's not available.
I think we will get kitkat 4.4 first, and 4.3 will be moot.
SG Note-i717 -SG Mega i527 (stock KK) iphone 5s-JB nokia 521/win8.1
SG note 8/JB TF101/dock/kitkat
It doesn't cost anything to be nice and say thank you!