Just days after the release of iOS 4.3.4, Apple has released another update for iOS 4.3 — iOS 4.3.5 for iPhone, iPad and iPod Touch. The new version reportedly is just a security update, aimed at fixing certificate verification issues. It is recommended that all Non-Jailbroken iPhone, iPad and iPod Touch users install this update as soon as possible.
Prior to this, Apple released iOS 4.3.4 which fixed the JailbreakMe 3.0 PDF exploit.
As yet there is now news whether you can jailbreak iOS 4.3.5 or not.
Update: iOS 4.3.5 has been Jailbroken using RedsnOw. 😉