Fallout 3, which will be 10 years old this year (good grief!), is being remade using the Fallout 4 engine for the Capital Wasteland project.
It's making good progress judging by a new video, which shows the player meeting the Brotherhood of Steel paladins at Tenleytown Station and going on to take down a Super Mutant Behemoth. It doesn't quite have the crumbly atmosphere of the original game but it looks undeniably more up to date.
Here's the Capital Wasteland footage next to relevant sections from the original Fallout 3 game.