The set has arrived, on the back of the book it says on the Blu-Ray - In Absentia & 3 bonus tracks in 5.1, so 15 tracks in 5.1If you click on "Tracks" tab on the link you provided, there is a listing of each disc's contents.
CD 2
1. Collapse Intro [01:45]
2. Drown With Me [05:21]
3. Orchidia [03:27]
4. Chloroform [07:14]
5. Futile [06:06]
6. Meantime [03:17]
7. Blackest Eyes (radio edit) [03:38]
8. Trains (radio edit) [03:52]
9. Strip The Soul (video edit) [03:35]
Blu-ray
1. The Making Of In Absentia (documentary film) [1.49:45]
2. Blackest Eyes (5.1 mix) [04:26]
3. Trains (5.1 mix) [05:57]
4. Lips Of Ashes (5.1 mix) [04:40]
5. The Sound Of Muzak (5.1 mix) [04:59]
6. Gravity Eyelids (5.1 mix) [07:56]
7. Wedding Nails (5.1 mix) [06:33]
8. Prodigal (5.1 mix) [05:33]
9. .3 (5.1 mix) [05:26]
10. The Creator Has A Mastertape (5.1 mix) [05:21]
11. Heartattack In A Layby (5.1 mix) [04:15]
12. Strip The Soul (5.1 mix) [07:22]
13. Collapse The Light Into Earth (5.1 mix) [05:52]
14. Drown With Me (5.1 mix) [05:21]
15. Chloroform (5.1 mix) [07:14]
16. Futile (5.1 mix) [06:03]
Either the description is misleading or the track listing is off.