Set your retina Macbook Pro's resolution to it's native 2880x1800.

EDIT: NEW VERSION HERE

So Apple just announced their new retina Macbook Pro...but they only let you use the scaled resolutions they specify? Well, as Apple eloquently put it, there's an app for that.

http://www.sendspace.com/file/mef6sk

SetResX (name will be changed, I'm quite sure) is a free menu bar program to set any non-scaled resolution your retina Macbook Pro supports, including the famed 1:1, 2880x1800 resolution.

Now for the fine print:

-First and foremost, this is still under development.

-I do not have a retina Macbook Pro yet...but this has been tested on one.

-Changes do not persist when you log out. A future version will let you make them persist.

-Want to go back to a scaled resolution? I'm working on it...but for now, use the System Preferences Displays panel.