http://www.youtube.com/watch?v=UYaAgT-yqOA
Blizzard said they wanted to add more of these cutscenes to the game, giving storylines a more 'epic' feeling.
Haven't seen any since the Jade Forest questline.
I was kinda expecting to see some cutscenes in 5.1, but there are none
You think they'll implent some in 5.2? I do hope so, they're cool.