This is not april fools, but the tool has been updated and is currently available at github under BSD license and free of charge.
Original message (March of 2016):
I wrote a tool for converting unity engine scene to unreal 4 scene.
It imports materials, meshes, etc.
The tool is not currently available anywhere, I’m contemplating selling that on either asset store if there’s some interest…
The clip is 30 minutes long, so feel free to skip ahead. Texture importing took forever while I was capturing the video.