These patch notes cover a new update that's now live in Heroes of the Storm, bringing balance changes, a new map rotation, and a new hero to Blizzard's MOBA. The new hero is Stukov, a support from StarCraft who's half-man, half-zerg, and all admiral. Here's the Stukov spotlight trailer and here's word on how he's bringing the long arm of the zerg:

In the 25th century of Earth’s History, the United Earth Directorate Expeditionary Fleet was dispatched to reign in the Terran Colonies of the Koprulu Sector. Over time, these expatriate colonists that were once loyal had wavered in their allegiance, threatening the fabric of government which had been sewn across the galaxy. Of the formidable commanders tasked with this imperative endeavor, Vice Admiral Alexei Stukov was second in command.

During the violent campaign in that system, developments ensued that would eventually cast Stukov in a traitorous light to his superiors. Having been found to be in violation of a direct order to destroy the powerful Psi Disrupter, Stukov was subsequently executed for his disobedience. Unbeknownst to the UED at the time, their ranks had been infiltrated by a powerful shape-shifting alien entity that sought to sow confusion about the importance of Stukov’s mission. After his death, Stukov’s corpse was later recovered by the Zerg, who sought to infest human leaders and mutate them into leaders of their own colonies. As the first of their attempts to blend their genetics with that of humanity’s, the once lifeless husk of Stukov was reanimated into something at once both more and less than human.

The infested Admiral known as Stukov has now entered the Nexus as a formidable melee support, ready to spread his healing pathogens and deadly disease across the battleground.