HTC have just added a boat load of their devices to their Unlock Bootloader platform. The last time I checked (quite a few months back) there were only around five devices available for the program, went back today to find 25 HTC devices are now available for the Unlock Bootloader procedure.
HTC has kept to its promise by letting us root our phones a lot easier than beforehand. It's a great move on their part and will build trust for the Android developer community.
Well done HTC and thank you.