It's pretty and minimalist and trendy but it isn't Wikipedia. Honestly, they would have done the same thing with any website. It's just a shallow coating of gloss over what they've labelled as "bad design". There is a lot wrong with this whether you're an insider or outsider. These are my biggest peeves:
Not only do they throw up a huge middle finger to non-English speakers (something I usually don't ever mind but this is almost obscene) but they do it in a way which involves replacing the current system with mystery meat navigation. How is anyone supposed to know the color bar is clickable and not just a ripoff of Vimeo?
The logo... They explain why the current logo is what it is then proceed to basically say "but we don't give a shit, let's use cool fonts and be trendy". The whole concept of the world being a puzzle of knowledge goes right out the window and they carried absolutely no piece of it into the new one. Also, the "w" brands have one major flaw: Wictionary. Every other name is a compound word but Wiktionary isn't a compound word but kind of a half compound word. It sticks out and doesn't make sense like the others (had the others truly made sense to begin with). I know it's a minor detail affecting only one brand but good design is all about the details.
In the end this redesign amounts to nothing but slapping a fresh coat of trendy on a massively popular website. It smacks of arrogance and self importance. I have to say they damn sure know how to make something look pretty and trendy but the way they went about this, especially the subject they chose, made them look pretty terrible now.