In a tweet from the PlayOverwatch account earlier today, it was teased that players worldwide would be able to playtest the highly anticipated upcoming map "BlizzardWorld". The official description of the map reads: "An amusement park celebrating the universes of Warcraft, StarCraft, and Diablo, Blizzard World is a brand-new hybrid Assault/Escort map. Charge the gates of Stormwind, sneak through the Nexus Experience, and guide the payload through areas filled with high ground, flanking routes, and environmental hazards. Grab some Blizzard-inspired snacks at the concession stand along the way!"

This patch also includes a number of bug fixes. As more patches are released, it is likely that balance changes will be tested in the following weeks.
Find out more about the PTR here.