Another new update on the Protoss feature over at the official Starcraft 2 site includes the Phoenix building Stargate. Look at the beauty of that thing!

The warships of the protoss fleet require a much stronger warp link in order to materialize than a standard gateway can provide. The immense stargate is capable of calling ships from high orbit or across immense distances to appear on a planet surface. The construction of one or more stargates at a protoss base is a sure sign that it has become a major staging point for an offensive.

via the Starcraft 2 website