HTC bootloader unlock any phone released after September,2011

HTC has decided to unlock the bootloaders on every phone launched since September 2011. The announcement came quietly in the sidebar on HTC Developer site, and in addition to the newer phones the company is also working to expand unlocking to older phones as well:

"All HTC Android devices launched after September 2011 are unlockable. The website will be updated accordingly to reflect this in the coming weeks. We continue to work on models launched prior to September 2011, please check back often for the status of older devices."