Apple's big event: Here's what to expect

The tech giant has said almost nothing publicly about what's in store Tuesday, but industry observers have some ideas.

Apple (AAPL, Tech30) is widely expected to unveil a pair of larger iPhones measuring 4.7 inches and 5.5 inches, up from four inches on the iPhone 5S. The company may also unveil a smartwatch, its first entry into the nascent wearable devices sector, and a mobile payments system that works with the new iPhones.
All that's just speculation at this point, of course, and Apple will ultimately be judged not on concepts, but execution. Here are a few things we'd like to see that would help make Tuesday's product launch a success: