The new Riddle Leak is interesting.
My guess is Rugby Monkey and Battle Frontier returns, mainly because of the leak he mentions. There's a decent list of things we could cross over as not what the leakers trying to get us to see. for example:
No Gyms
Pure Grass Line. To simple for it to be brought up.
Two Kola Points.
and I'd say Main Rival siding with Villains. Hau could do this, but it make more sense with Lili. But Team Skull is less serious so I don't see either having a valid reason to side with them.
Also Red doesn't speak.
That leaves:
Battle Frontier Pretty Big thing for a leaker to leak, plus not many have. With the teasing in ORAS, and out crys from fans, I'd wager Masuda said since it's the anniversary let's give the fans what they want.
Dolphin line. This is a fair thing to confirm, most speculate it for Hawaii but we haven't seen one. Wouldn't say the types right though.
150 new pokemon. I'd be willing to bet that will the Gen 1 pandering already, and it being the anniversary game, that 150 new mons will happen. They'd had 3 years going on 4 by release from what XY hints, so they have had plenty of time to do this.
Gen 1 pandering. Already confirmed, but again, not worth the leaker bringing this leak up.
New Engine and New Models. Already confirmed, but again pointless for the leaker to mention this leak.
Professor Oak returns. Eh, I'd say this is 50/50.We last saw him in HG/SS so he could make an appearance. Plus he has his rottom in the anime and they may reference it. I could also see this go back to Gen 1 Pandering.
Fire Dark line: Possible. May be something the leaker wanted to mention, but this is an obscure way of doing it. Could reference the leaked Litten Evolution.
Kahuna Doll Line: Very interesting choice. I'd say this is definitely something the Riddler is hinting at. We have boss Kahunas, the Hawaii theme, several Hawaiian inspired pokemon, so this could be another one. It would fit pretty well. Again, if true type may be wrong.
That's my thoughts on this latest batch of the Riddles leak. I'm sure Tuesday will show us on of his hints, but until then we wait.