Ace Combat Infinity will be doing its first free worldwide beta on February 4th through 11th. Any pilots in the beta will receive a unique emblem in the final game. You will be able to play the PS3 exclusive by downloading the client from the Playstation Store.

In addition, any Beta tester that participates in the Beta survey will receive an "Exclusive" wallpaper (as if it will be exclusive once it hits the internet).

Source: ACE COMBAT -Official Fan Site-