Now that we are getting closer and closer to the launch of the HTC EVO 3D, the once-secret FCC documentation has now been revealed. By now, the EVO 3D has long since passed FCC approval but the documentation that led to its approval was covered by a 180-day confidentiality request from HTC. While requests of this nature are rather typical -- this one seems to of have been in place to cover up the schematics of the device in general. Why exactly, we're not sure but they are now available for your viewing pleasure. Hit the source link for the full rundown.
Source: FCC; Thanks, Emeterio!