Yes. I got it through AT&T Next. Was supposed to trade my old 6Plus in to get it but AT&T never sent us the shipping label to do that. My husband decided to keep his and my 6 Plus around anyway as backups since they were paid off at that point.
The SE came out. With the 6plus just lying around and nobody in the family wanting it at the time, I decided I wanted to trade it in at the Apple Store for the compact SE as my daily driver. I did not go through AT&T Next so I still had my 6S Plus. But took the sim out of it for the new SE from Apple.
I thought we were going to trade my 6S Plus in through AT&T Next for the Note 7. But I found out we lose our Unlimited Data plan if we stop using iPhones on it as it is tied to the exclusive use of iPhones.

Then my husband decided he wanted a Note 7 when he heard the T-Mobile BOGO rumor. The BOGO deal ended up being through AT&T instead. We had to get new lines for each Note 7 to get the deal. It's not the greatest deal, but we prefer to stay on AT&T's great coverage.

So that's how I will end up with 3 viable smart phones at the same time. The SE will be my pocket phone and text and quick camera. The Note 7 will be my portable computer and power camera since it has OIS and slightly more accurate color.
The 6S plus is in free play for trade ups and backups. So theoretically I can still trade up on AT&T Next for the iPhone 7 with it. I currently have no interest in doing so. The 6S Plus gets a surprising amount of use around the house on wifi. It may eventually go to my mother-in-law. She prefers small iPhones though.