From the Guardian Tech:

"Apple has released an update for the iPhone which it says protects it from the vulnerability, revealed yesterday, that could let hackers take complete control of the phone, including reading its contacts and calendar details.

Although there is no formal announcement by the company, an update for the iPhone has appeared on users' computers. The phone can only be protected from the weakness by synchronising it with the owner's computer; unlike other phones, Apple is not allowing network operators to update the phones "over the air". However as the update is 230MB in size, that may be seen by owners - and network operators - as a blessing.

Two security researchers, Charlie Miller of Independent Security Evaluators, and Collin Mulliner of Fraunhofer SIT demonstrated the hack yesterday by taking over a reporter's iPhone at the Blackhat conference in Las Vegas via a single specially-crafted text message."

Apple has moved quickly to fix a kink in the matrix. Google's Android is already ahead of the game and Windows Mobile is still behind the curve. Anyone with a Win Mobile based phone should beware any of the SMS shenanigans hackers may try and pull.