He doesn't have Ben's colors, and the Omnitrix is nowhere to be seen. Plus, the picture shows him with a ray gun on his belt, so it's possible he's just a really pompous-looking Incursion
The article that we got the picture from says it's Ben's newest alien. It's the sentence right before the picture.
Ultra Ben 10 Fan wrote: They didnt say its a new Alien from the Omnitrix. Just a new Alien. :D
It says it's the Debut of a new Ben alien, so it has to be from the Omnitrix. Plus, it makes sense, considering in the preview how the Incursion Emperor touched the Omnitrix with his tongue, it would've scanned it.
I think that when ben went Incursion, he had his original colors- but to earn the Incursion's trust, he took one of their uniforms and changed, then ducked into their armada. The omnitrix symbol is smaller than most aliens and is on his upper chest, covered by a part of a uniform about it shape and size.
no no no ben had to leave earth and he landed on a planet and saw azmuth he unlocked bullfrag and ben went back to earth and stayed hidden from the incursions he tryed to blend in and turned into bullfrag and worked for attea just to play along with the act and when he found kevin and gwen and rook and argit he betraded attea and escaped with them they thought he was suspisious for a minute but they new it was him when grandpa maz called the incursion alien ben