This looks intriguing - I hope it does well…

'For the first time ever, Fortnite developers can create Star Wars™-inspired islands in Unreal Editor for Fortnite (UEFN) and Fortnite Creative using curated assets and tools from our largest IP toolset to date. It includes all-new Star Wars templates, tools, and gameplay features, along with characters, locations, vehicles, and weapons from past Fortnite Battle Royale Seasons. Mix, match, and build your own Star Wars experiences for players to explore!
On May 1, you’ll be able to publish Star Wars islands through the Creator Portal and a new Star Wars Game Collection page will launch in Discover. Star Wars islands will be eligible for additional Discover placement, including Epic’s Picks, so don’t forget to submit them!’
^ more in the linked article above.
So it looks like there’ll be new Force abilities, enhanced jetpacks, players able to talk with NPCs - akin to RPGs such as Skyrim. There’ll also be support for first-person shooting - allowing creators to craft ‘Call of Duty’ style games set in the GFFA. And more…
a 90 second demo / trailer…

Create Your Galaxy - STAR WARS™ Tools Now Live for Fortnite Developers
www.youtube.com/watch?v=9J9kP4VIAI0 - a 90 second video from the Fortnite Developers and Unreal Engine youtube channel.

‘Star Wars Battlefront 3 is coming to Fortnite!’ (from a certain point of view; fan-made BF3 is coming to Fortnite)
www.youtube.com/watch?v=RIVlmmbcUVA - an 8 minute video from the AZZATRU youtube channel.