EA has released some new screenshots from the upcoming Dead Space Extraction game. These screenshots demonstrate how the targeting reticule changes according to the weapon. Looks like the reticule with the 3 horizontal dots is the Plasma Cutter and the Pulse Rifle is indicated by the 3 dots in a triangular position. You can see the gauges at the side of the reticule that show the ammo level.
Placing the indicators on the targeting reticule helps keep the screen clear from any HUD, something the developers did for the original Dead Space by placing indicators on Issac Clarke's suit.