I read and has been confirmed that you can have them flash the boom box GTS to say it has the WHIM installed so that when you plug in your cell phone via the usb cable you can use all Carplay app functionality (google maps, waze, open table, etc, etc) except anything talking.
I am going to do that, which is all I really care about. I don't make calls on the bike and I don't like talking to anyone while I'm riding. I'm too busy dropping F bombs at idiot cagers.