Hey, thanks for sharing that. I though I'd just give my opinion.
*Stuff I agree with:*
1. Typography. The shorter lines with more spacing and bigger type make evereything so much easier to read. Since there's so much text on Wikipedia pages, it's a good idea to give it some room to breathe on the sides. The 'read more' links help removing the skyscrapers of text that the current design suffers from sometimes.
2. Layout I like the simplified one-column layout. Really puts focus on the content.
3. Big ol' search input in the header. Search is easily the most used function, so it's good to make it as accessible as possible.
4. I personally like that they dropped the puzzle-globe, it takes o lot of visual weight from the design. But that's a different discussion.
*Things I disagree with:*
1. Three separate designs for 'desktop', 'tablet' and 'mobile'. Doesn't make sense in today's growing device landscape. What about a 10-inch phone? What about a TV, smart fridge, Google Glass? Responsive design is the way to go.
2. No calls to action are present - Everything is just a text link. I think users should be encouraged to 'create an account' or 'edit the page' by making these things stand out a bit more.
3. These are just pictures of websites. Interactions (as in: what happens when I click the search-bar? What happens if I click the globe) aren't part of this design, even though they are imho just as important as typography and layout.
What do you guys think?
best, max @awesomephant