iPhone users finally get copy/paste, Spotlighting searches and push. Apple Inc. today pushed out the much-anticipated iPhone OS 3.0 update that company execs touted at last week’s Worldwide Developers Conference. After spending some time with iPhone 3.0 on both an original Edge-based iPhone and last year’s 3G model, I can tell you the update makes even older phones more responsive and offers a number of improvements — some of them long overdue. Aside from the new features I highlight below, iPhone owners who download the update through iTunes will notice that, overall, the user interface is smoother. Animations don’t stutter as they did before and data loads more quickly.