HTC released a bootloader unlock tool for a range of its devices a while back, but now it would appear that there is at east one new HTC device that will not get the bootloader unlock tool.
According to the guys over at MoDaCo, the HTC One X on AT&T will not be getting the bootloader unlock tool, you can see a statement from HTC below.
HTC is committed to listening to users and delivering customer satisfaction. Since announcing our commitment to unlockable bootloaders, HTC has worked to enable our customers to unlock the bootloader on more than 45 devices over the past six months. In some cases, however, restrictions prevent certain devices from participating in our bootloader unlocking program. Rest assured, HTC is committed to assisting developers in unlocking bootloaders for HTC devices and we’ll continue to unlock additional devices in the future.
According to various reports, it would appear that AT&T may have something to do with HTC not providing a bootloader unlock tool for the HTC One X on their network, although this has yet to be confirmed.