Blizzard has today released a new trailer featuring all the updated multiplayer units that will be available in the upcoming expansion for StarCraft 2. Each race will be receiving a range of buffs and additions, including new units only available to Heart of the Swarm owners.

Protoss - Upon analyzing data from their most recent battles, the protoss have identified a few areas of improvement that would help them maximize effectiveness against their enemies. Based on their findings, the protoss have augmented their arsenal with an extremely long-range attacker, additional psionic units, and a new form of enemy harassment.

Terran - The resourceful terrans have also been improving their technology to better survive their battles in the Koprulu sector.

Zerg - The zerg continue to evolve and adapt to changing environments, particularly the dangers they face on the battlefield. New creatures will help the zerg stage more effective sieges and add unique enemy-manipulating abilities to their arsenal.

You can check out a sneak peak of the upcoming additions in the trailer below (HD here), but also check out the full details to each new unit and abilities for each race over here.