According to the tables in the sticky, integrated fog lights are only available in the 3T and 4T. When watching the video below, Dave Lee from Toyota states they are available in the 4 as well. So the question is.... which is actually correct? Go to the 4:40 mark in the link below, I sure hope Dave's statement is accurate!
I'm pretty sure they will be available aftermarket... Maybe even some nicer ones than Toyota Offers. But yeah, Boo...They should at least be offered as an "accessory"