StarCraft II: Heart of the Swarm/New Terran units

Battle Hellion
Hellions can transform into tougher, slower and stronger walkers with shorter range but the splash damage is wider.

Warhound
New walker unit that does bonus damage to mechanical units and light air units and its like the thor only smaller and faster.

Widow mine
Widow mines attached themselves to enemy units and causes major damage in a radius.

Thor
Players only get to build only one thor and the thor will lose its AA abilities and requires both the Armory and the Fusion core to build.

Battlecruisers
Battlecruisers gets a speed boast ability to flee from faster foes or reach their destinations faster.

Removed units
The Shredder is now removed from the game.