Today Mozilla announced a refined, cleaner logo for Firefox. I love it! Much simpler, flatter (buzzword alert), and cleaner. I think the simplicity is a good thing, even when the logo is blown up to larger dimensions (something Apple at least previously suggested against - they used to say to add detail as a logo got bigger).
I also like how a bit of detail, gradient in colours, and flair was kept - it might have been easy for the design team to go very flat and simplistic to match current design trends. I’m glad they kept a bit of personality.