George Oates “We've just released the big round of changes I mentioned last week: New Navigation, New Search, New and Improved Organizr, and the Person Menu. All of these improvements have been designed to help you navigate the site with less effort and organize your photos more efficiently.”
Look for new navigation menus in the top navigation bar: You, Organize, Contacts, Groups, Explore.
When you search from the main navigation bar, you'll be looking through the titles, tags & descriptions of all the photos on Flickr. You'll see that you can zero in on your photos or photos from one of your contacts too, and sort the results in a few different ways on the search results page.
You can access the new Person Menu by moving your mouse over someone's Buddy Icon.
Double Click and Drag & Drop are your friends when you're using Organizr. We've also added a new section to the FAQ called "The Organizr" where you'll see that each area of the Organizr has been highlighted and explained, so that's a good place to start to orient yourself with the new workspace.