When I first saw this update on my iPad, it seemed as if Jony had a little snit fit and decided to poke us in the eye (with BOLD) for dissing his original spare interface. “Too hard to read and navigate in Safari? Huh? How’s THIS?!?!”
Avinir, the bold was simply because a lot of us had turned BOLD on in the settings to make the fonts darker and more readable at the change from iOS 6 to iOS 7. Now that they've corrected THAT FUBAR, the bold setting needs to be turned off again. You have to do that. Go to Settings > General > Accessibility > Bold Text and turn it off. Voilá, done. Everything is back to normal. Jonny listened to us and corrected his Faux Pas.