After looking at it closely, I think I've figured out what the Focus Rifle looking gun in the new images is. Second image for in game comparison. Forgive my shitty photoshop skills. :
Aggressive, Paranoid, & A Little Melodramatic. — Prometheus Lens “Cryptarchs made a crystal that...
Gestalt Intelligence ornament for Prometheus Lens for Season of the Plague. [CONCEPT] : r/destiny2
Aggressive, Paranoid, & A Little Melodramatic. — Prometheus Lens “Cryptarchs made a crystal that...
Prime Gaming on Twitter: "It's your last chance to claim April's rewards for @DestinyTheGame including an Exotic Ghost Shell, Ship, Prometheus Lens Trace Rifle, and Ornament on #TwitchPrime ✨ Claim here https://t.co/ohtfoB9z0B
Destiny 2: Curse of Osiris Concept Art by Ryan Gitter | Concept Art World | Concept art, Destiny, Concept art world
Prometheus Lens 10% Buff (Sandbox 2.1.0) | Destiny 2 Season of the Forge - YouTube
Bungie says Destiny 2's most overpowered Curse of Osiris weapon is bugged | Eurogamer.net
Destiny 2 Prometheus Lens Bundle Drop | Now available for Destiny on #twitchprime The Prometheus Lens Trace Rifle 🔫 Eye of Osiris Weapon Ornament 🏵️ Tyrant Ghost shell👻 Fleet Ska IX Ship