For starters, not 
everyone is tired of Owl City. Nothing wrong either with an artist trying something different to keep the creative juices flowing. 
Secondly, why do you presume Adam uses autotune? I've heard him live in concert and his voice didn't sound any different that night than on his cd's.
first; this isnt anything different. its basically just owl city under a different name. it sounds exactly the same.
second; he does use autotune a number of songs. anyone with an ear for music can hear it. he doesnt use it to the point that he sounds like a robot like some people, but its definitely there. and there are ways to use autotune live, but he doesnt and i can hear the difference