It's a "worldphone" that supports both CDMA and GSM that will be available for AT&T Inc. (NYSE: T), Verizon Wireless and -- for the first time -- Sprint Corp. (NYSE: S)

Faster data transmissions and better voice quality through intelligent switching dual-antennas

Support for High-Speed Packet Access Plus (HSPA+) 3G on the GSM side. The maximum download speed possible over this network upgrade is 14.4-Mbit/s, and 3-Mbit/s or less is more typical on average, although Apple's antenna update may juice that up

New A5 processor that will allow eight hours of talk time on 3G and six hours of 3G browsing

A voice-activated personal assistant on the phone that can let users make appointments, search, set alarms and dictate documents over the phone. According to The Guardian's live stream, the voice-recognition capabilities of Siri are impressive

A new eight-megapixel camera with faster point-and-shoot capabilities and 1080p video capture