We're already used to seeing Samsung release an 'Active' version of its current Galaxy S flagship. The Samsung Galaxy S7 active is the latest in the series and it has been released exclusively to AT&T as it's also become customary. If history should serve as any reference, the model would likely not see availability outside the stable of this particular US carrier.
Source: http://www.gsmarena.com/samsung_galaxy_s7_active-review-1457.php