From engadget: Yes folks -- the world is turning upside down. Apple has announced an iPhone OS 4 event on April 8th at 10AM for a "sneak peek of the next generation of iPhone OS software." So if you're wondering about the future of the platform... your answers will appear sooner than you think. The team collectively dropped an "OMG" when we saw this news, as it's pretty unusual to see such a big event coming from Apple right on the heels of something like the iPad launch. Of course we'll be there -- at Apple's Infinite Loop campus in Cupertino -- live and direct, providing the liveblogging coverage you know and love.