They can pick any they want, yes, however, they are renaming the home and away jerseys. "Each team will have four primary uniforms, with the home jersey being renamed the Association Edition and the road jersey being designated the Icon Edition."
Basically they are removing the limitations on how often teams can wear which uniforms. If the Celtics are in town and Portland wants to wear black they can
I'm guessing there is more to the names than just names. Icon for example might feature the teams logo large like how GS does
No, he's a famous Audi owner. They're going to sponsor his jersey. They'll use 4 silver hula hoops for their logo.
I'm curious why so few teams are going to have "classic" jerseys. I figured most teams would want something along those lines periodically.