Yesterday Apple announced a ton of new features that will be coming in the next version of iOS, but unless you're a developer, you won't actually be able to get your hands on them until this fall when it's officially released (along with a shiny new iPhone, natch). Fortunately, though, the good folks at Read Write Web got a hold of the latest developer's preview and have provided this video walk-through of some must-see new features. We could take or leave the changes to calling, personally, (Calling. How quaint!) but we're simply dying to play with the new Maps app. Check out all that plus new tricks in Siri in the video.