Thanks for the great response everyone! Sony embracing web technologies such as #webgl was what brought me to work here, and I'm really excited to talk about the details of our application. I think our team here has done an amazing job with the user experience.
I wanted to address some comments and clarify what is actually running WebGL with some development screen grabs. Each is highlighted accordingly. PS4 store is done completely in WebGL so I didn't attach anything related to that.
WebKit or Blink? We're a WebKit shop currently as people figured out from the PS4 license. The Blink/WebKit split happened after we were deep in development. My personal preference is Blink but that's not my decision to make.
UI framework is in house tech. I handled the layer below that it uses for its rendering which is all WebGL. Will be talking more about everything at that level during my talk at +SFHTML5.
What's New view with WebGL highlighted
Live Details view with WebGL highlighted
https://plus.google.com/+DonOlmstead/posts/Mzy6VEAwHaa