New iPhone 4 is slimmer, faster, super high-resolution, and lasts longer

As anticipated, Steve Jobs unveiled the iPhone 4, at WWDC on Monday, and although we knew most of the details, there were some surprises. Here's what you need to know:

1. Design

• 9.3mm thick; 24% thinner than 3GS
• Stainless steel exterior band is an integrated antenna
• Glass front AND rear

2. "Retina Display"

• 325 "ppi" (apparently they are above "dots" now)
• 3.5-inch; same as before
• 800:1 contrast ratio; 4x better than 3GS
• Not OLED; claimed that you can't make an OLED with high enough resolution

3. Apple A4 Chip + Bigger Battery

• Claiming 40% more talk time, 300 hours of standby
• Quadband HSDPA/HSUPA

4. Gyroscope

• Adds three axis for pitch roll and yaw, giving a total of 6 axis with existing accelerometer
• New "CoreMotion" API's for making use of motion tracking

5. Camera -- Backside

• 5 Megapixel
• LED Flash
• HD Video; 720p, 30fps
• Built in video editing with iMovie

6. Front Camera and Video Conferencing

• For use with new "FaceTime" video conferencing tools
• WiFi only (said that is "for now" -- Apple will work with carriers)
• iPhone 4 to iPhone 4 only

7. iOS4 -- new name for the OS

• Free upgrade for existing devices on June 21
• Multi-tasking
• Folders
• iBooks for the iPhone

8. Green Cred

• Recyclable
• Produced without most of the nastier materials

What do you think, will you upgrade or switch to the new iPhone?