Opera is celebrating the news that it's hit the 300 million monthly user milestone with a big announcement. It's going to dump Presto, the current Opera rendering engine, in favor of WebKit. The company gave the impression that it's exhausted after swimming against the tide of an internet designed to work for Chrome and Safari for so long. Instead, the firm will devote its considerable resources toward "innovation and polish" on its browser products. Opera's already hinted at its future by demonstrating Ice, its WebKit-based experiment for iOS and Android devices, which it'll be showing off in more detail at MWC later this month.