Marvel's Loki is set to hit Disney+ this Wodensday, and the series premiere wastes little time in delving into what became of Tom Hiddleston's God of Mischief when he absconded with the Tesseract in Avengers: Endgame. We already know that the Asgardian trickster "God" will be apprehended by the TVA, but what happens next might be considered a bit of a spoilers, so fair warning before you read any further.
Once he's accepted his captivity (more or less), Loki is given a crash course on the history of the TVA via an awesome animated sequence which introduces the Time Keepers, and explains the sacred timeline along with the events that led to the first "Multiversal War." We later learn that further disturbances in the timeline could lead to another Multiverse conflict.
While speaking to Murphy's Multiverse, head writer Michael Waldron was asked if this might be a nod or reference to classic Marvel Comics event, Secret Wars.
"We'll see," he replied. "You'll probably know, as well as I do, not everything is just there. If the purpose of that whole thing was to just indoctrinate the audience and everything. Yeah, we'll see how this plays out in the MCU moving forward."
This is obviously far from any kind of confirmation, but it does sound like the scene might have been an intentional nod to the next big MCU Multiverse-spanning event. Whether that turns out to be Secret Wars or not remains to be seen, but Kevin Feige did recently claim that Loki will have a bigger impact on this shared world than the previous Disney+ shows, so we're going to be watching the rest of the miniseries very closely.