He sounds like a beefier Zeratul
Heroes of the Storm has only begun its content updates, as we have a whole host of skins, mounts, and characters coming up. The Support-based Medic Lt. Morales is set to debut soon, and after that, the Warrior Artanis.
While no official info for Artanis exists outside of his character model, the folks over at Heroes Nexus have datamined the game for info, uncovering his traits and abilities. He seems to be an aggressive Warrior, with a dashing Q, instant double-attack buff, a position swapping skillshot, and a pair of orbital strike Heroics that can be used across the entire map.
All in all he seems to have an interesting kit, focusing mostly on close-combat with a few tricks in tow. Oh, and he also has a kickass Eva Unit-01 skin.
Artanis Talent Calculator [Heroes Nexus]