Status on Crossrealm?

Blackrock queues are so dead lately, it has got to a critical point where even as a fresh team you can't get any queues for the largest part of the day. Crossrealm would be possible solution for this so I'm concerned when is the Crossrealm system gonna be live? The last thing I heard about it, it was that It would come with the new season, which just started, I could be wrong but anyways, any info on it?

PD: How is the gear gonna be handled on crossrealm? Is SM gonna be a thing on Blackrock? Is it gonna be banned from arena? What about 284 broken meta?