Today at WWDC, Apple introduced the iPhone 4, which we all knew was coming out because of all this hubbub. It looks awesome — the design is sleek and the addition of the flat, metal edge is a nice design touch.

My favorite of all the new features is FaceTime, wifi-enabled video chat. However, you and the other caller both need to have the iPhone 4 in order to use FaceTime.

Equally as impressive is its new Retina display:

By developing pixels a mere 78 micrometers wide, Apple engineers were able to pack four times the number of pixels into the same 3.5-inch (diagonal) screen found on earlier iPhone models. The resulting pixel density of iPhone 4 — 326 pixels per inch — makes text and graphics look smooth and continuous at any size.

What do you think — are you going to get an iPhone 4 or stick with whatever you already have?