User blog comment:Rupert Giles/Layout Changes: Breakpoints and Typography/@comment-452-20150520150624/@comment-126761-20150520152605

You are correct - I've just fixed my comment.

As an aside, we don't want to get really specific about content widths as a general rule - designing around a single pixel width can be as much of an issue as designing about a whole range of widths. These tweaks are around bringing down that range to something more manageable.