This is a pre-production HTC Thunderbolt that was rooted by the gang at AndIRC. Will be posting details on the root method in this thread, shortly after release.
Nothing was done to the bootloader, it shipped with s-off. We don't expect production devices to ship this way, however we do expect to have s-off after rooting it.
Thank You
TheEndGame7 - for the phone
jamezelle = for doing the work
koush - for the quick recovery
andrew8806 - for bringing us together.
We invite all those interested, especially developers to come work with us.
Chat at irc.andirc.net #thunderbolt
or
http://chat.andirc.net:9090/?channels=#thunderbolt