When I finally get around to downloading iOS5 for my iPhone and iPad, I'll certainly appreciate the 200+ new features that Apple is introducing with this big, free software upgrade, such as full Twitter integration, iMessage and Reminders.
But the big one I'm looking forward to? AirPlay mirroring. (SplatF's Dan Frommer's post about his most anticipated iOS5 updates got me thinking about this topic this morning.)
So what is AirPlay mirroring and why will it matter for users and the Apple TV? (Note: As a commenter below states, the AirPlay mirroring feature is only available for iPhone 4S and iPad 2.)
AirPlay is Apple's Wi-Fi content-streaming technology that enables you to push music and video from your iDevice to your television, with Apple TV ($99) as the wireless intermediary that makes it happen. Since I've owned an Apple TV, I've streamed photos, videos, and music from my iPhone to my TV. For instance, I take a bunch of photos of my kids playing outside and later, when we're inside, I flash those photos quickly on my TV. Wirelessly. Simply.
Now, AirPlay mirroring will allow you to mirror the entire iPhone or iPad, including all your apps. Suddenly, you can presumably start playing an iPhone game, and shift it to play on a bigger screen.
Or how about that Keynote or PowerPoint presentation you've been preparing? Imagine you have a demonstration to present to a group, and there's a 50-inch TV in the conference room. You bring your slim Apple TV and your iPhone/iPad and, bam!, you're giving a presentation without a laptop.
I really believe if Apple sets up a couch, a big-screen TV, an Apple TV and an AirPlay-enabled iPhone or iPad in each Apple Store, the company will see its Apple TVs fly off the shelves in short order. So much for Apple TV as a side "hobby," as Steve Jobs once called it.
I really believe AirPlay mirroring can be the sleeper hit feature of iOS5, which actually drives more hardware sales for Apple.