The iPhone Dev. Team has just released a new jailbreak for iOS 4.3.1, about which we reported a couple of days ago.
The new jailbreak is an untethered one, unlike the previous jailbreak released for iOS 4.3.1. The new jailbreak supports iPhone 3GS, iPhone 4, iPod Touch 3G/4G, Apple TV 2G and iPad 1 running on the latest version of iOS.
The jailbreak is also available for all Windows and Mac owners via Redsn0w or PwnageTool. Readers can download the application from here.
iPhone 4 owners, who have unlocked their handsets using Ultrasn0w, need to wait until an updated version of the app comes out. Right now, Ultrasn0w unlock is incompatible with iOS 4.3.1.
Sadly, iPad 2 owners need to wait for a jailbreak, until a boot rom level exploit is found for their device.
Incidentally, the first version of PwnageTool was released on this very day, three years ago!