Took from this video:
Time stamp: 1:47Have you ever wanted to have intro of Gaben saying Episode 3? Fear not! Because then, we have something for you!
Version 1:Full Video Preview
Original version. Intro seems to be longer, duration of Intro is 32 seconds.
It includes Big Picture Steam and ATI Radeon logo intros which are shortened.
Features Medic turning into Lord Gaben you may hate or love.
Version 2:Full Video Preview
Pretty much, shortened version of Intro. Duration is 21 seconds.
Removes Big Picture Steam and ATI Radeon logo intros.
I couldn't make "Episode 3" louder as it was silent in video clip, so sorry if you didn't heard that.
Also, Sorry if Image previews are having wrong colors but, it's issue with VLC Player's screenshots.