Some of the questions I get asked the most on a daily basis deal with the iPhone. Thus, I naturally deduced that it's time to compile all of the confirmed facts that have been released about the iPhone!

Facts:
1. Apple and AT&T have a 5-year exclusivity agreement. This means that AT&T customers can look forward to not just the iPhone, but several other models as well.
2. Costs for the iPhone will be $499 for a 4GB model and $599 for an 8GB model. The reports are that the costs of the phone will not be subsidized for new contracts.
3. It will be quad-band and EDGE net access.
4. Runs on Mac OS X.
5. You'll be able to Sync it up with your iTunes, but I haven't figured out if it will sync with anything else....doesn't look likely at the moment.
6. The introduction of Visual Voicemail. This will provide a list of your voicemails and you can choose which one you want to listen to without having to listen to the previous voicemails first.
7. Soft QWERTY keyboard on a touch screen.
8. 2 MP camera.
9. Safari browser will enable you to view a site as it appears on your computer's browser, and you can simply touch the screen to zoom in.
10. Multi-touch display enabling you to control everything on the phone via various finger gestures.
11. Check out the specs of the iPhone here.
12. One word: Wifi!
13. Threaded SMS feature.
14. Release date: sometime mid-June? (I hear rumors ranging from June 11 to 15, to end of June. Cingular has always had some problems getting their phones out on time, but I prefer to think Apple will be a little more strict and ensure its getting out earlier.)
15. Not available for pre-order.

Links:

Gizmodo post of official press release
Official iPhone site