• System requirements
  - Mac or PC
  - iTunes 7
  - Internet access is required, and a broadband connection is recommended
  - Mac: Mac with a USB 2.0 port, Mac OS X 10.4.8 or later
  - PC: Windows PC with a USB 2.0 port and Windows XP Home or Professional (Service Pack 2)
• External Controls
  - Volume Up / Down
  - Ringer / Silent
  - Power / Lock
  - Sleep / Wake
  - Menu Button
• Dimensions
  - 4.5 x 2.4 x 0.46 inches / 115 x 61 x 11.6mm
• Weight 4.8 ounces / 125 grams
• Input Method - Multi-touch
• Operating System - OS X
• Screen size - 3.5 inches
• Screen resolution - 320 x 480 at 160 ppi
• Storage - 4GB or 8GB
• GSM - Quad-band (MHz: 850, 900, 1800, 1900)
• Wireless data
  - Wi-Fi (802.11b/g) + EDGE + Bluetooth 2.0
• Camera - 2.0 megapixels
• Battery
  - Lithium
  - Up to 5 hours - Talk / Video / Browsing
  - Up to 16 hours - Audio playback
(Battery life varies by use)
• Connectors and other input & output
  - 30 pin iPod connector
  - 3.5mm jack includes audio and mic support
- SIM tray
  - Built-in speaker
  - Built-in microphone

1月份有说支持GSM吗?
WWDC前爆出来的消息