I’m guessing by Monday we will know both the next raid boss and when the CP rebalance will be in full effect. Giratina seems the most likely, and by the all the new moves should be released and I am hoping for a move reshuffle. If not him, the shinys of Groudon or Rayquaza would be the next best guess.
What comes after Mewtwo on 23rd?
I think a lot of us are guessing Giratina. However, Niantic did not give it shadow ball, and its attack is pretty bad. Do you guys think Niantic will give it Shadow ball in the last minute?
Though shiny Groudon/Rayquaza would be really cool (as others have mentioned), all evidence points to Giratina as our next legendary Mon.
I'm also hanging on to some hope that some moves get shuffled around before more of Gen IV is released. None of the new moves have been assigned to anything yet, so there's still a chance that when those new moves get sorted, other change-ups could happen as well. Giratina could certainly use a better ghost charge move! It's just a hope though. I mean, Deoxys is our EX raid boss and it's moves are garbage.
A new raid boss.... Seriously tho, Giratina has all but been officially announced. It’s been teased by Niantic all across social media, it’s a pretty safe bet... Unfortunately Niantic has learned that the can sell Meta players superior move sets and that the average player couldn’t give a toss about them and will raid anything multiple times for the Dex entry and the chance at higher IVs, so I suspect garbage moves now and it getting its proper moves a few years from now as some sort of “reward”. But who really knows?
"Do you guys think Niantic will give it Shadow ball in the last minute?"
No, not likely. If Niantic wanted to give it Shadow Ball, they would've done so. Why would they set its moves, then suddenly change them right away when it comes out?
It's possible it could get it at some later date, but right now, I highly doubt it.