Welcome to the official Leap Motion UE4 Plugin thread!
Right now, you can access the plugin directly from the Unreal 4.7 source code. Download and build the source from Unreal’s GitHub repository and start creating an amazing experience for desktop VR! The plugin will also be bundled with future Unreal binary tool releases, so be on the lookout for updates there.
Read Leap Motion’s announcement here
Questions about the plugin? Building something cool with the engine and Leap? Let us know!