Some videos from a startup called Berkeley bionics who have developed an exoskeletal walker that allows people who are paralyzed from the waist down to walk again.
This sort of tech has been floating around for years but never been practical it looks like we're are now on the cusp of this sort of thing becoming a practical reality. Elegs is obviously their first prototype but it sounds like they are getting close to developing the technology for use in the home which would make a radical difference to people.