12mm hex truck wheels
 

Does anyone know where I could find the associated 12mm hex wheels for t4.1/t4.2? If not are there any other truck dish wheels with a 12mm fitment?

The AE wheels aren't out yet. The T4.2 is the first truck to use the hex wheels so they won't be available until the truck is.
You'll have to find another manufacturer with the same offset (sorry - no idea what might fit but hopefully someone else has done a conversion to a T4.1 and found something that fits).

JConcepts already have this covered with the Mono 12mm truck wheels, already in stock and avialable.

Also, DE Racing have this covered as well with their Trinidad spoked wheels, already available in 12mm hex too..