No, the AT&T version is simply the unlocked model. It does not come with any carrier specific applications. If you are wondering how you're going to get them on your phone this is how it works
When you insert your AT&T Sim card into the phone the phone will ask you to restart, after you do that the next time you go into the play store carrier specific applications such as visual voicemail and My AT&T will be available for download. I had the same question last year because the HTC 10 was the first factory unlocked phone that I have bought
you also won't have any problem with Wi-Fi calling or voice over LTE take it from me, if you ask the carriers themselves they will tell you that because you are using an unlocked device that it will not work but everything will be fine
