Well here's more confirmation that it is taking place in season six, but at the same time contradictorily states it'll happen during the summer.
Here's the field:
Richard "Rare Breed" Hale
Attila "the Hun" Vegh
Roger "Hulk" Hollett
Travis "Chosen" Wiuff
If it weren't going down the same time as the other tourneys I don't know why they would be announcing the field already.
I hope for the fighter's sakes who were promised upon signing they would be competing in a tourney ASAP, and the others who need work, that the tournament is happening this season.