Abilities and Fortnite Template Abilities are now out of Experimental, so you can publish islands with custom abilities built with animation, Niagara effects, sound, and more, without writing complex code.
Watch the Template Abilities livestream to learn more. https://www.youtube.com/watch?v=xSdtmO_XLy0
The LEGO® Brick Editor adds 50 new bricks, just in time for Fortnitemares. You’ll also find new Reality Reign prefabs and galleries, and you can now license UEFN source assets on Fab.
Players are starting to see the redesigned Discover experience. Starting October 22, portrait thumbnails, landscape thumbnails, and logos will be required to publish or update your island.
Read the full v42.40 release notes and fixes here: 42.40 Fortnite Ecosystem Updates and Release Notes | Fortnite Documentation | Epic Developer Community