It's actually quite interesting to think about it. Considering Intel hitting 14nm with Broadwell, there's only a certain limit to which we can push things or make them smaller. There has to be a point of saturation with things. BUT that's where the interesting part will be. The new revolutions that spring up new manufacturing materials which can defy the limits of the current ones.
This was bound to happen. I'm sure everyone expected it to be even greater that 50. I'm hopeful that they'll continue to focus on the simplicity which happens to be their main USP.
Kickass stuff! Although if by chance you documented your way through out the app and could share it, it would make a pretty decent guide for people looking to go MEAN. And that would also add a lot of substance to the Technical Details section of the post.