Gematsu has three outstanding New Comer reveals.
"nearing the bottom of the stash of new challenger videos" doesn't mean there is only one left, the three makes sense.
They are live streaming this, specifically, which means it could be big and something unexpected.
Don't see Chrom getting that much attention if he is in. Chorus men and Shulk would deserve their own stream because they are a new franchise entirely.
OR
We could see Big Boss..
Technically, He would be a "New Comer" because he is not Solid.
Remember, There can be only one snake and one big boss
I could be reaching, but I would gauge the likelyhood on this on the MK information revealed at EVO.
We know Boon has teased a reveal..and Keifer said he was in Mortal Kombat, yet that has never been announced or showcased. I would imagine if you had a big name attached to your title you would reveal it when you revealed the game. Also, Mortal Kombat has never had any big names attached to it so that makes it more of a reason to be announced when the game was.
I chalk it up to Keifer knowing he was in a fighting game, but not knowing which specific one...
Like our PSASBR Pal.