This is the most beautiful page I've ever seen. There's a lot of subtle awesome in the scrolling effects.
I think the new palette is amazing. I also really like the logo. It's a step towards being a 'big boy' company with a simpler logo that can be functional at any size. They can always flesh it out to be a dA as shown in the video whenever they want a more obvious variant.
I sadly am not a fan of the logo at all. The redesign seems cool, I am a big fan of the Klim Type Foundry (an awesome and small typography foundry making some seriously great fonts), however it looks like a Not Equals Sign to me "≠" and doesn't really scream DeviantArt at all. I personally think the existing logo was fine, don't fix what isn't broken.
Fresh look, but a little edgier than common user submissions. If anything the browsing needs to be lightweight. Would be cool to have more community centered features like annotations / narrative showcases / etc.... With a site like this - it could even be from crowd sourced design suggestions.
I think the new palette is amazing. I also really like the logo. It's a step towards being a 'big boy' company with a simpler logo that can be functional at any size. They can always flesh it out to be a dA as shown in the video whenever they want a more obvious variant.