Undergroup iPhone developer Jonathan Zdziarski, the author of iPhone Open Application Development has confirmed that the newly shipped 16GB iPhones can indeed be jailbroken, allowing read/write access for installation of unofficial third-party applications.

“I decided to go and buy a 16GB for testing. It does, in fact, jailbreak properly and run on approved networks.”

Jonathan Zdziarski, is one of the most respected underground iPhone developers and has been instrumental in developing numerous jailbreak techniques and methods and recently released a book titled, "iPhone Open Application Development".