Found this on Reddit posted by MovingWindmill
At first I thought this was just a pretty animated gif. Then I kept on reading. ITS THE REAL DEAL!
How It’s Done It’s the new clone feature. It lags quite a bit but if you want to see it in motion this is the link for the schematic. For the full realistic experience, you need to turn the repeaters in the other direction, as u/Ratelslangen just pointed out that it would need to move counter-clockwise 🙂