It was speculated that it could be just Vince McMahon’s inner-circle working on plans for the match but that’s not confirmed. It’s likely we won’t hear much on what they have in store, which usually makes for a better product.
There is still no word yet on if Shane has returned for just this angle but it was noted on Wrestling Observer Live that apparently there is something to rumors of Shane sticking around after WrestleMania.
On a related note, Bryan Alvarez noted on Wrestling Observer Live today he’s heard that we can expect to see an edgier WWE product between now and the biggest show of the year.
