You're probably right.
Which also sucks, both because I think Activision has just hired a bunch of people (because of all the people that jumped ship), and also because I love love love Diablo, and I'm a playstation person, not an XBox dude.
Well, Playstation fans have been decrying Xbox for a while now, and parading around that they have all these exclusives that Xbox doesn't.
I guess Xbox finally got tired of Playstation fans saying stuff like that (despite the fact that I actually LOVE Forza a LOT more than GT, and Halo more than much of what PS has, and Gears of War more than Uncharted).
However, when Microsoft has exclusives, I don't think all of them will be "exclusive" the way Sony made their exclusives in some cases. PC gamers will also be able to play most/all of those "exclusives" which puts it way better in my eyes.
What is even better is if you have a Windows machine (Well, Win10 and later) you can play Xbox games via your PC!
I have all of the above (PC gaming, Xbox, Playstation) so, overall, it's not that big an impact if one has an exclusive and another doesn't, but I find it funny how many Playstation fans are sad about Xbox maybe getting exclusives.
The only thing I'm hoping is that Microsoft changes Blizzard from Blizzards push to have everything online all the time. I get tired of having to ensure SC 2 hooks up at least once a month, or that the new Diablo 2R has to also hook up once a month when I only play SP. There's no reason for someone who plays SP to have to hook up again after intial installations (IMO).
Also, hopefully change Diablo 4 so it can be played offline (at least on Consoles if nothing else) rather than being an MMORPG lite (like an MMO, but without as much stuff). That right there is almost enough to make it so I don't buy Diablo 4. I remember what happened with Diablo 3 when it came out (constant time outs, etc) and the problems with it being always online. Add to that with the more recent Diablo 2R ques just to get to play the SP portion of the game (sometimes people would wait hours, longest I waited thus far was 30 minutes...but still...FAR to long just so you can play the game because it wants to verify it) and I get a BAD feeling about the troubles Diablo 4 will have when it is released if it is going to basically be an always online game.