I've split your post into your own thread. In the future please create your own thread.
To answer your question, no there is no option to upgrade the 2018 head unit to have Android Auto or Car Play. In my opinion, you're better off with the 2018 head unit as you have a ton of aftermarket options which are infinitely better than what Toyota has to offer even when compared to the latest Infotainment units.
2019 Toyota C-HR LE Silver Knockout Metallic
2013 BMW 135i Carbon Black
2009 Ducati 848 Pearl White/Black
2004 Kawasaki Ninja ZX-10R Black