User blog comment:Rappy 4187/Technical Update: August 31, 2015/@comment-1824272-20150901213413/@comment-5275700-20150902195259

The mobile web design for article pages has indeed been updated. There are also some related server-side changes, and articles are being served in a more optimal way now.

We'll have some news and information next week regarding main pages on mobile web, but this broader change for the entire main namespace had to precede what we'll be releasing for main pages.