I was thinking about how sometimes, there's nothing new in What's New for hours or even a full day, but I spend a lot of time checking for anything new in What's new during those times. If you made it so that if there's nothing new it goes gray, like the rest of the tabs, and then goes blue when there's something new, that would be great. It would even be better if it only goes blue when there's something new since the last time you visited the What's New page so that you don't have to click the "Mark all Read" button every time.
This wouldn't have to be a dynamic feature. It just updates on page loads.
What do you think?