Game update prompt while playing 09/15/19?

This was at 12:45 EST US - I had just beaten Mouthpiece and paused the game. I was then prompted to exit the game for an update.
I declined because I wanted to grab my loot before exiting. Once I quit out I couldn’t/can’t find the update anywhere.
I checked Microsoft, in the game itself, my Game & Apps, nothing.
Did anyone else experience this tonight?

got it as well yesterday but could not find it either after declining

Just got it today first time starting the game. Accepted it and was returned to the title screen and … nothing else. Epic!