Greenpois0n and iOS 4.3 . It seems that GreenPois0n  untethered jailbreak  will be available very soon as announced by iPhone hacker pod2g, ...

Greenpois0n RC5 Windows Download to Jailbreak iOS 4.2.1 iPhone, iPod Touch and iPad

iOS 4.3 beta 3 Available for Developers

iOS 4.3 Compatible Apps Appears in App Store

Greenpois0n and iOS 4.3. It seems that GreenPois0n untethered jailbreak will be available very soon as announced by iPhone hacker pod2g, Apple has closed the loophole hackers have been using up until iOS 4.3.

The good point is that because of this (and the fact that Apple fixed the kernel exploit in 4.3), we’re all working back on releasing gp.

So GreenPois0n RC5 will be released very soon for iOS 4.2.1 on all devices.