Apple started fulfilling the “free case for all” program promised at last Friday’s press conference. Any iPhone 4 user who didn’t purchase a case or bumper from Apple can now download the “iPhone 4 Case Program” app. The new app is the only way to get a free case. Users cannot place an order at Apple.com, in an Apple store, or in the “other” Apple shopping app, “Apple Store”.

After downloading the app, iPhone 4 users have the choice of 8 different cases, only one of the eight (a black Bumper) being from Apple. Each case has an estimated shipping time of a speedy 3-5 weeks. Most of these cases aren’t really available yet so reviews are scarce, but here is a general breakdown of what’s available.

Ideally, users would be able to walk into their local Apple store and pick up their case. Even though five weeks is a really long time to wait if you are experiencing serious antenna issues, at least the price is right. Now, for those users who just don’t like the iPhone 4 anymore:

Which case will you get?