It clearly has a much larger range of motion and if it is also stronger as claimed then I can't wait for the acrobatics videos that are surely coming.
But I think the most exciting thing is that it has hands from the start. Atlas didn't have hands for most of its existence and so couldn't do much in the way of useful tasks. I think controlling hands is actually much harder than walking or doing backflips. Hopefully Boston Dynamics will be able to make this version useful.