Cannon rushing, a popular early game tactic, was just the beginning. With a patch already out and Legacy of the Void on the horizon, get ready for even more aggressive Protoss, rushing and beating you with the most basic thing they can build: Pylons.
An update a few weeks ago added the ability to the Mothership Core to be able to overcharge Pylons with 25 energy. With this, the Protoss supply buildings can now attack. And it wouldn't be StarCraft if people were not abusing it already. (Well, that's the beauty of StarCraft.)
Remember when rushing with Pylons AND Cannons were a thing? Now it's just Pylons.
Protoss veteran White-Ra from Ukraine shows how to do it perfectly in a 4-minute video. Pretty deadly stuff!