Microsoft has said that they have "15 Exclusive titles" coming in the first year of the XBone.
Out of those, we've seen about 13, many of which were new announcements or exclusive reveals.
we know about:
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Ryse
Project Spark
New Halo
Dead Rising 3
D4 (Digital chapter based kinect game)
Forza 5
Titanfall
Killer Instinct
Crimson Dragon
Kinect Sports Rivals
Minecraft XBone edition
Sunset Overdrive
Quantum Break
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Sony on the other hand, announced that they have 30 exclusive 1st party titles in the works for PS4, and that 20 of those would come in the first 12 months since release.
out of those 20, we know about:
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Knack
Drive Club
Killzone: Shadowfall
Infamous: Second Son
Order 1886
now, Shuhei Yoshida specifically said, that these are "20 games coming from Sony Worldwide studios group", which means that Deep Down and Mad Max are not included in that 20.
Where are the other games then? and what about a launch date/month for PS4?
Simple, Sony has another conference to show things at, in 3 months, called Tokyo Game Show. TGS is actually important for Sony because it is primarily a Japanese company, and it is E3 for them, so they have to hold some things to reveal over there. Which I believe is when the date will be revealed.
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12 new IPs as a part of that as well.