So PC players did a bit of digging and managed to figure out the configuration for SWAT is apparently already in the game:
If you launch Steam in offline mode, you can play custom games with Bots and Tactical Slayer, which is the new name for SWAT, is on the last page of game modes. along with a few elimination game modes like classic elimination and dodgeball.
According to them, this has now taken the place of what was there last week in...Fiesta. this has led to speculation that they're going to do what some feared in locking playlists behind events.
If they're seriously planning locking fan favorite modes behind events and drip feeding them that's where I draw the line. There's nothing wrong with having them on rotation (master Chief collection rotates between a few special ones like fiesta, grifball and stuff every week) but locking them behind crappy ass events to try and draw traffic/create a fear of missing out might be the worst idea 343 has ever had of that's what it ends up being..
Still trying to be optimistic as I refuse to believe a company would be that stupid, but in this day and age who knows