European Tour rosters info

Hi everyone. I'm planning to go to my first WWE live event on November during their European tour.

So far only 6 superstars are been advertized for those dates in my country and most of them I don't really care about (Sheamus, Big Show and Wyatt to make a few examples). This has stopped me so far from purchasing the tickets and from booking train/plane and hotel room.

I tried to search for similar threads on this sub but I didn't find them, if I'm wrong I apologize.

Do you guys know when WWE usually chooses and start to advertize the complete rosters of the tour? Guys like Cesaro, Owens and all the divas still haven't been advertized for the tour.

Thanks in advance.