A:AnswerLimited stock as of tomorrow (September 22nd), should be generally available late October/early November, based on what I've been seeing. I'm just going to keep checking stock on the web site every few days, starting tomorrow, and get it whenever it's available. :)
A:AnswerApple watch with GPS+Cellular requires separate activation & additional data plan aside from your iphone ONLY if you want to be able to make calls & send messages without your iphone nearby. Otherwise, you have full capabilities as long as your apple watch is within range of your iphone.
A:AnswerMost apps will work on the cellular watch while your phone is not near but some apps, like nest, require the phone to be within Bluetooth range. Calls and texts work on cellular perfectly.
A:AnswerApple sells only two cellular model. One for US and one for China carriers, refer to this site for the list of US compatible carriers: https://www.apple.com/watch/cellular/
A:AnswerApple watches occasionally go on sale through Best Buy so your best chance would be to just wait and see. However, I bought mine literally two days before there was a $50 off sale. Best Buy was super easy to work with and they gave me a $50 credit because it went on sale so close after my purchase.
A:AnswerIt can be bought for different servers @ Best Buy. I read it’s an additional $20 for 20 months for all cell phone service so it’s just the same price when you buy it alone plus tax plus you don’t have to spend $400 rin the spot.