I'm guessing Indie titles.

Maybe they could announce 100-200 indie games that are being developed for their system and act like they have a crapload of games coming to their system.

How many of the 15 first year exclusives do we know by now? Anyone know?

Considering the type of attendee that goes to PAX, what type of gaming experience could the "surprises" include?

let's see

1 Forza 5

2 Ryse SoR

3 project spark

4 KI

5 titanfall

6 Zoo tycoon

7 quantum Break

8 DR3

9 kinect sport rival

that's it I believe so there are 6 titles left to go I think....

It's going to be a new game called 'Jurassic Park Adventure Time' A blend of Dinosaurs, the original Adventures game with many adventures reflecting the adventures of Fin and Jake. 

Here is a secret shot of it. (Note: Sean Penn is optinal.)

More games are always good

I forgot

10 Crimson Dragon

11 loco cycle

12 sunset overdrive

and not sure if

13 fighter within

14 minecraft XBox one edition counts

not sure they actually count the XBLA games in that or not too

well actually you have also

15 Halo

16 just dance

17 fantasia

18 black tusk game (don't think it's 2014 though)

anyway there is something wrong in my count... so either some are not 2014 titles or they don't count XBLA

By optional you mean paying DLC.