In a much needed move Bethesda showed a brand new set of building modifications for Fallout 4 that will be coming next week. With this you will be able to able to create elevators and many other things to help you make rube goldberg contraptions.
You will be able to also able to create your own vaults and experiment on your dwellers, in something visually simulator to Fallout Shelter. Last thing we get to see Nuka Cola World, which might be a DLC item.
Also Fallout Shelter is coming out on PC. So get ready for that to such out your life.