Everyone that is worried about not having received the Kitkat update yet, be glad. There is a bug on the Kitkat update, that is causing excessive battery drain. Apparently, it has some sort of connection to the camera/qualcomm processor combination. Chris Chavez had mentioned it on the Phandroid podcast.
Initially, my update on Sprint was fine, but I started experiencing the battery drain issue yesterday, so hopefully Google releases their update to all the manufacturers (Samsung, in our case) soon, and it doesn't take too long for the carriers to pass it through also.
For those that are unbranded, but still haven't received the Kitkat update, definitely be thankful because a carrier won't delay the update even longer.
BTW, another thing I thought about (for those unbranded)...if you're really in such a rush to get Kitkat, I'd also try checking through Kies (actually connecting, not using wireless connection). I remember, when I had my international Note 2, that was the only way I actually received an update that had been released (but never showed up as an OTA update). Otherwise, if you don't need it right now, I'd highly suggest waiting until Google releases the revision to 4.4.2 (or update to 4.4.3).