Facebook's new Timeline profiles go live on Thursday, September 29, 2011, but you can convert yours now. You just have to pretend you're an app developer (or continue being one if you already are.)
It's a simple four-step process that can be done in a couple of minutes. Here's how you do it:
Install "Developer" app
The easiest way to do this is just by typing "developer" in the search field. Simply click on the first app (it looks like the picture we've inserted above.) Once you click on the app, it will automatically take you to the developer portal.
Create a new app
You'll also have to enter a CAPTCHA to verify that you're a real person (even though you might not be a real developer.)
Name the app
Enable Open Graph
Name your Open Action
Return to your user profile
Once you return to your profile, you should have the prompt asking if you'd like to enable the new Timeline interface and make it public before it actually launches publicly.