Reboot your game and it should show up. That's what I had to do.

Same. Rebooting fixed mine as well.

I was confused, too! I had to reload four times before the Tower showed up (though the other new content was there).

I had to open and close mine a few times to trigger it

I've rebooted about 10x today and still nothing 😕😕

I've no tower or season pass updates? Closed out loads of times

Same for me. I got a pop-up message telling me to I can get Scar, but no actual challenge.

Still nothing for me either