Usually we have to wait a while before we have a confirmed theme for The Challenge, but it appears this season is different. In addition to having some confirmation of the format, we are also receiving spoilers in a very new fashion this time around: Snapchat.
Based on an anonymous Snapchat, it appears that we have a confirmed format: Rivals 3!
Looking at the cast, it most likely seems that this will be coed Rivals. Primarily because we only have 2 people from Are You the One 3, and they are one male and one female.
So far, having a season filmed in Mexico has not disappointed!
Stop Being Polite 
This is awesome. Rivals 3 is going to be one hell of a season. Season 28 want come out til July/August 2016. I wonder what where their final challenge will be? Peru, Uruguay, Spain, or The Netherlands?
If it’s co-ed, why isn’t Cara Maria there with Bananas?
She declined
Oh. That sucks
Rivals 2 there were sixteen teams, so people could still be missing since there are only 26 people listed on your rumored cast list.
Rivals 1 & 2 was same sex.
Coed teams have less people exes 1 and 2 had only 26.
They are prpbably 2 replacements