The logo sucks though. Really. It's terrible. Firefox has a great logo, designed by Jon Hicks, as does Safari, Konqueror, Chrome and even IE. But Opera's has always been an also-ran logo - too lopsided to hang out in the dock, too simple to invogorate the imagination, too un-browsery to evoke thoughts of zipping down the information superhighway consuming content at breakneck speeds.
However, the people at Opera (now including the aforementioned Jon Hicks, who credited Oleg Melnychuk with the new icon design) have listened and finally released a new logo. It's still not the greatest logo out there, but at least it isn't lopsided in the dock any more.
Hat tip: Joen @ Noscope.