We're basically waiting to see what bootloader will ship with the Evo 3D. They announced on May 26 that they will no longer be locking bootloaders. Radio Shack has an online Evo 3D simulator that actually shows screenies of the Evo 3D's ENG HBOOT, which is unlocked by design. Will that ship as the production HBOOT? Wouldn't that be awesome
It would outdo anything any manufacturer has done in terms of relaxing bootloader security.
While I'm not confident that the production bootloader will come unlocked out of the box, I am confident that it won't be protected with an encrypted signature. Otherwise, HTC will be made a big fat liar for what they said on May 26.