Let's work together on testing the changes quickly, because we'd like to aim for testing/locking down the specific changes for the actual patch to go live ~2 weeks after that. The main gist of it is to have a version of the Swarm Host that is straight up much stronger than right now, but make sure that mass Swarm Hosts aren't a thing still. We can do a straight up power buff such as a cost reduction in combination with a nerf such as supply cost nerf to prevent mass Swarm Hosts to be too effective in the maxed out army scenarios. In the thought of keeping everyone updated, we're wanted to let you know we've been looking at Swarm Host buffs internally. We've been busy testing various things this week, and we realized we didn't give you guys a heads up yet.
출처 : http://us.battle.net/sc2/en/forum/topic/20743234745