A new exploit discovered in the iPhone hardware, or more specifically, the A4 processor, makes the iPhone, iPod touch 4G and the iPad jailbreakable for life. The exploit is found in the A4 hardware, so Apple can't patch this through a software update without updating the hardware.
The exploit is similar to that of the iPhone 3GS, old bootrom, before Apple released an updated hardware revision to block the exploit. However, this is still a tethered jailbreak, meaning you won't be able to reboot the device without having it connected to your Mac or PC. However, the iPhone hacking community will likely discover a way to package this into an untethered release, so users can keep their jailbreak.
With this type of exploit discovered, Apple may update their hardware on the iPhone 4, iPod touch 4G and iPad to prevent hackers from exploiting the device. This news comes only a day after Apple released iOS 4.1 and iPod touch 4G shipped to customers.
Perhaps the Mexican Carrier executive was right; Apple might be releasing a hardware revision after all.