yea that's obvious. If they do come to Steam, it won't be at launch. It could come at a later date, or it could never come to Steam. Microsoft might be keeping their exclusives in the family this time. They are trying to compete with Steam though, so they could test the waters without a steam release first and see how things go. Microsoft has been open to cross-platform gaming for along time now. They've made cross platform with PC obviously, they've also made crossplay with Nintendo too. They'vs tried many times to make games cross platform with Playstation but Sony for some reason doesn't want to do it even though Playstation player's have voiced their disappointment in that decision. I ain't sure if there is or was any talk on crossplay with Steam users. That would be cool.