PartinG has been using this 4-Gate Blink Stalkers for quite some time, but the buzz only kicked off when he defeated Maru with it in the recent GSL quarterfinal. This post lays out the basics of the build and how Terran can deal with it.
TY used a very good build against Stats in the recent GSL series.
There were many good TvP games in recent IEM Katowice. These games showed a shift in the timing of the third Command Centre.
Powering up on two bases with a 3-1-1 set up and moving out with Stim and two Medivacs is the most common build up in TvP for a long time. This article answers some questions I received and discusses some lesser known details.