What do you mean? His starring shorts will finally be added there, or do you mean he will make his debut as part of "New Looney Tunes" episodes on the app? Cause if it is the former, you shouldn't have posted it in this thread, and if it's the latter, then he already debuted a few months ago in Season 1.3.
The full episode already premiered internationally this fall. It's episode 76a, "One Carroter In Search Of An Artist", and yes, it does have a lot of "Rabbit Rampage"/"Duck Amuck" references Except that they are, of course, modernized for the 21st century, with all the new technology and that