StumbleUpon is saying bye bye to the green and blue logo we are all familiar with and have introduced a new orange logo. Not only did they go through a logo change, but the entire site has been redesigned. The update was just rolled out today.

As you can see from the photo above, it looks nothing like the old StumbleUpon design. Here are a few key pieces that have changed:

The logo – The green and blue “SU” logo is gone and has been replaced by an orange one

New StumbleUpon bar – The bar has fewer buttons and a cleaner look. The bar now includes the Stumble button, voting buttons, simple share as well as the new Explore Box the company introduced back in August.

Stumble Channels – There are currently over 250 channels and that give users a way to directly explore content from sites, celebrities and brands.

StumbleUpon CEO Garrett Camp told Mashable, “Users had the expectation that they would see an individual acting on good will to share a piece of content rather than a for-profit company promoting a piece of content for selfish reasons. Now we have a place where it’s ok for users to publish their own things.”

Do you use StumbleUpon to discover new content? If so, what do you think of the new redesign?