Apple has just released new firmware for the iPhone 3.1.3 (7E18), a minor OS update for iPhone 3GS, iPhone 3G, iPhone 2G, iPod touch G1, iPod touch G2, and iPod touch 3G. It includes a fix for the iPhone 3GS battery level reporting, fix for apps crashing with Japanese Keyboard and fix for apps crashing upon launch. None of this is very important which is a little surprising since its been awhile since the last firmware upgrade. A major firmware upgrade will occur on or before the newest iPhone is released this late Spring or early Summer. IMO, I wouldn’t upgrade your firmware yet as none of this seems like anything you’d want and if you have a jailbroken iPhone as always DO NOT UPGRADE your firmware until the dev team clears it. Unless you want to risk losing your jailbreak or unlock, just wait til its cleared. It wont’ be long :)