Most users will have to wait a few weeks before they get to see Facebook's most drastic changes to the service since the company was founded, but you can use a developers workaround to gain access to the Timeline feature right now.
Developers already have access to early beta versions of the features. Luckily for users eager to try out the new Facebook, becoming a developer is a simple process that shouldn't take you more than 5 or 10 minutes.
Facebook announced the updates Thursday at the company's f8 developers' conference.
Here's how you do it.
First log into Facebook and enable developer mode. The easiest way to do this is to just type "developer" into Facebook's search box and click the first result. It should look like this.
You'll have to retype your password and allow the developer app basic access to your account before you see a screen that looks something like this.
This is the basic developer page. We're going to convince Facebook we're real developers and create an app that uses its new "Open Graph" tech. Don't worry, it's not nearly as hard as it sounds.
Now, create a new app by clicking the button in the top left corner. Nobody but you will actually see the app so the information you enter doesn't actually matter. Just create an app name, a namespace (which needs to be all lower case), agree to the terms and conditions, and create the app. Now you should arrive at the app's main setting screen, as shown below:
Click on the link labeled "Open Graph" on the left to open up the Open Graph Getting Started page. To get started with Open Graph, you've got to fill in an action your app can do and an object for your app to interact with. This can be any verb and noun. (For instance, my fake app fulfills my lifelong dream of fighting a robot.)
After you've created your action and object, click the Get Started button. This will drop down the first of three pages of settings but, since no one will see them, they shouldn't matter. Quickly click through them to create your app. When you're done, you should see a page like this:
Congratulations, you're now a Facebook developer on the cutting edge. Just wait a few minutes for your new developer status to filter through the system. Then return to the Facebook homepage where you should find an invite for Timeline at the top of the screen.
Be warned that the new Timeline is a little bit buggy and everything Zuckerberg promised in thursday's keynote hasn't been implemented yet but, if you want to get a handle on Facebook's new features early, try out the new Spotify app, or just gain bragging rights with your friends, this should be your golden ticket.
One last thing: Even though you now have access to the Timeline, it still won't be your default homepage. To get back to your timeline view you'll need to surf to http://www.facebook.com/YOURNAMEHERE?sk=timeline switching out the YOURNAMEHERE part with your facebook username, or just bookmark the timeline page when you get to it.