
The model number this device carries is SM-G890A. It lines up nicely as the successor to the Galaxy S5 Active which carried model number SM-G870A on AT&T. The User Agent Profile points towards a Quad HD resolution display which is already present on the Galaxy S6 and the Galaxy S6 edge. Samsung might make some changes to the design to ensure that the Galaxy S6 Active is dust and water resistant even if it doesn't make any changes to the internal specifications.
Both Samsung and AT&T have not yet confirmed when the Galaxy S6 Active might be launched, though rumor has it that an announcement could take place in May 2015.