[Delraich]

Some more info:

Nexus Abilities

Arc Shield
Cost: 25 Energy
Effect: Place an anti-light cannon on top of any structure for a brief period of time.

Recall
Cost: 75 Energy
Effect: Transports selected units to target Nexus

New Units

Replicant
Built from: Robotics Facility
Cost: 200/200

Oracle
Built From: Stargate
Cost: 150/200

Phase Shift – Target structure is phased out of existence for a brief period of time. During this time, it can't be attacked, use abilities, provide power or tech. Massive structures (Command Centers, Hatcheries, Nexus, etc.) are immune.

Preordain – Placed on a target enemy structure to gain vision of what it is producing.

Entomb – Prevents mining from target Mineral patch for 45 seconds. Can also be used to remove Entomb from patches of your own.

Transforming Hellion

Hellions can now transform into a slower, stronger assault mode. Hellions sacrifice their mobility and get 45 extra hitpoints from the transformation, and get no additional damage. The transformation doesn't require an upgrade, and only takes a few seconds to complete.

Warhound

Built From: Factory (Requires Tech Lab and Armory)

Warhound is a beefy mech unit with a powerful GtA attack and a formidable GtG attack with bonus damage to mechanical units as well. It has 240 hitpoints

Shredder

Built From: Factory (Requires Tech Lab)

20 damage per second to nearby enemy units. Nearby friendly units deactivate it completely.

Thor

Built From: Factory (Requires Tech Lab, Armory and Fusion Core)

It has 800 HP, does insane amounts of damage (60×2 GtG), and has an AoE spell that does up to 200 damage over 12 seconds, with bonus damage to buildings.

Battlecruiser

The BC has a new ability as well, which gives it a brief speed boost. With the ability activated, Battlecruisers can really move quickly, which will allow them to retreat or engage better than before.

Viper

Requires: Lair
Cost: 100/200

It is a flying spellcaster unlocked at Lair that essentially replaces the Overseer with three spells.
Ocular Parasite (50 Energy): Turns target unit into a Detector (Massive Units are immune). Although Zergs will no longer have the snap Detection of the Overseer, Ocular Parasite will allow detection to be much more flexible. Assign it to an Overlord, Queen, or basically whatever unit you want.
Binding Cloud (75 Energy): Casts a cloud that reduces all enemy units under it to melee attack range, and prevents spells from being cast under it. Lasts for 10 seconds.
Abduct (100 Energy): Pull target unit to the Viper. It will allow Zerg players to pull high-prority targets like Collosi, Immortals and Siege Tanks into the middle of a ruthless swarm. It could also be used to save high-priority targets like Broodlords, Infestors and Ultralisks from an unfavorable position.

Swarm Host
Requires: Infestation Pit
Cost: 200/100

The Swarm Host is a very powerful siege-esque unit. While Burrowed, the Swarm Host spawns two Locusts every 25 seconds. Locusts are very powerful melee warriors that have 110 hitpoints and deal 14 damage per attack

Burrow Charge

This is an upgrade to the Ultralisk, which allows it to move very quicky while burrowed to a target location, unburrow, and knock surrounding units back with a small amount of AoE damage dealt. This ability doesn't requre any research, and will make Ultralisks much better at closing the gap on lategame enemy armies. The ability has a 30 second cooldown.

Tunneling Claws

This Hive-tech upgrade at the Baneling Nest allows Banelings to move while burrowed.

Siphon

This is a new ability for the Corrupter. It does damage to buildings over time, and in return gives the Zerg player 10 Minerals over 10 seconds for the damage dealt.