The layout only had a minor tweak, that being the size of the font displayed. It's easier to read.
If that bothers you, many browsers have a feature for zooming the font size up or down on a given web page. Personally, I happen to like the new size, since it doesn't appear to take up much extra space on the page at all and is so much easier on the eyes - the fact that I'm wearing glasses these days is probably a factor as well!