iOS 6 is kind of a letdown. It has some nice improvements over iOS 5 (Facebook integration, redesigned apps, etc.), but there aren't many substantial improvements over the older iOS versions.
I saw the iPhone 5 at a Verizon retailer today while I was at the mall. The bigger screen is nice, but again, the whole unit looks like a slight upgrade to the iPhone 4S. The "Panorama" feature is amazing, kudos to whoever finally convinced Tim Cook/Phil Schiller/etc. to go ahead with that idea.
The new iPod Touch (5th Gen) looks awesome. I want to get one, but I can't believe they're charging $300 for a 32GB unit!
There are a few Siri-like apps in the App Store; I use one called "Evi". And there is a very helpful text-to-speech function (called "Speak Selection") that's hidden in the "Accessibility" menu under "Settings". Once you activate it, you just select a block of text and then tap "Speak", and a Siri voice reads your text out loud.