As you already know, today a beta version of jailbreakme.com 3.0, the first jailbreak solution for iPad 2. In this beta version, the exploit used by comex to make userland untethered jailbreak for all devices with iOS 4.2.1 – 4.3.3 was available. i0n1c claims that Apple has already acquired the exploit used to make this jailbreak and iOS 4.3.4 will be released in the shortest time to cover the vulnerability. He claims that Apple will release iOS 4.3.4 right before jailbreakme.com 3.0, but I think that here he is forcing the "note" a little considering that we are at the weekend.
iOS 5 will be available in just 2 months, so it is quite possible that Apple will release iOS 4.3.4 by then to cover the vulnerability used by jailbreakme.com 3.0, but I don't think that the new version of iOS will be available before the jailbreak solution. Until then, I recommend you to be careful and be very careful about what you do through iTunes so you don't wake up that iOS 4.3.4 is available and restore without knowing.
It seems that now comex will rush to release the new jailbreak solution, it remains to be seen how long it will take to finish it.
UPDATED: I recommend you to read This article in which I explained everything you need to know.
Thanks to Calin.
