Cameras and Controls devices get an update, you’ll see three more devices for LEGO® islands and the Olympus and Underworld Chests have been added to the Chest & Ammo Gallery.
You can now produce custom sounds for the Patchwork Instrument Player, and Unreal Revision Control (URC) has been updated.
Check out all this and more at http://create.fortnite.com/news/fortnite-ecosystem-v29-40
Bug fixes can be found in our documentation at https://dev.epicgames.com/documentation/uefn/29-40-release-notes-in-unreal-editor-for-fortnite