Is it possible for PC players and XBOX ONE players to play together?

I have a friend on PC that’s interested. I’m on XB1 preview. Can we possibly play on the same server?

This one is tricky. The short answer is no, and the reason is the PC version uses steam ID as part of the character identification process on the database on PC servers.

I’m not sure how the Xbox server version handles this. But the PC version is integrated entirely with Steam currently. So I assume there would be a need to have Xbox Live and Steam speak or knowledge the other in some fashion codewise.