Apple has just released iOS 4.3.4 for its iOS devices including the iPhone 4, iPhone 3GS, iPad 2, iPad and third and fourth-generation iPod touch devices. Apple also released a comparable update for Verizon Wireless’ CDMA iPhone 4, iOS 4.2.9. The new build includes a security update that addresses a vulnerability with PDF files. It also patches the extremely popular jailbreak solution, so it will no longer function on devices that update. IOS 4.3.4 is available immediately via iTunes.