According to a known Apex Legends dataminer, Tobias "Biast12" Poulsen, players should be ready to see map changes and an upcoming event. Tobias has leaked data from the game previously, with an entire archive full of the files he has retrieved.
On April 14, he claims that Olympus will get a "big map change" at the start of the season. World's Edge would get a small map change in the middle of the season.
The next day, he claimed that Crypto will have an Heirloom Collection Event with a post-apocalyptic theme. On that same day, he claimed that a system override sale/event did not have a general theme but that there were recolors according to the files. Later on, he announced that Apex "got a small patch" but that he did not know what it was.
In addition to the information obtained from leaks, he allegedly has an insider who shares information with him. The insider was wrong in certain claims, so while the leaks may seem promising, it is best to approach this information with a grain of salt nonetheless.
Speaking of events, currently War Games is live on servers and players can obtain a rare Crypto skin called "Broken Syntax" and participate in multiple limited-time modes exclusive to this event.