At Major League Gaming's Spring Championship (June 8th-10th) attendees will be able to play a beta of Heart of the Swarm! Tickets are only $35 to the event which is being held at the Anaheim Convention Center outside LA, California. There will be some kiosks out on the floor offering folks a chance to play the beta. At this point no one knows if this is the same build we saw at Blizzcon or a more recent one.
A recent Dev Update explains that they've changed a lot, maybe we'll see these changes at the MLG Spring event?
Which new unit are you most interested in?