For those interested, the press release lists the bonus material as about 95 minutes. A number of the listed features are already on the North American iTunes release, and account for just over an hour (60:23) of that:
Welcome to Westworld (7:41)
Crafting the Narrative (29:15)
An Invitation to The Set (2:14)
Welcome to Westworld: About the Series (2:11)
Reality of A.I.: Westworld (4:28)
"The Big Moment" featurettes:
[Show spoiler]- Bernard Faces an Unlikely Saboteur (1:21)
- Teddy Versus the Man in Black (1:56)
- A Host Self-Sabotages (1:53)
- Maeve Gets An Answer (1:36)
- Dr Ford's Blood Sacrifice (1:36)
- The Truth About Bernard (2:21)
- Dr Ford's New Narrative (3:51)
The new features should therefore constitute about 35 mins of content, so I imagine the breakdown will be something like:
Inside Look with Jonah Nolan and Lisa Joy - Season One (New Featurette) (~5-7 mins)
Imagining the Main Title (New Featurette) (~5-7 mins)
The Key to The Chords (New Featurette) (~5-7 mins)
2017 Comic Con Panel (New) (~10-15 mins)
Gag Reel (New) (~5 mins)