sudo was removed from the base source tree. This is not a problem as far as bootstrapping the packages goes, because dpb was completely revamped to NO LONGER depend on sudo at all.
In fact, there is a whole subsection entitled BUILDING_WITHOUT_SUDO refer to that section as far as bootstrapping things go. If you are using dpb, it's a *very good idea* to follow that setup. This is what's primarily used by the heavy users of dpb, and anything else is likely to break at some point in the future. As for day-to-day work on ports go, for now, personally I'm still installing sudo and working with it. Using the dpb "inside-out" model for actual ports work looks like a fair trade. We still want to recommend that people install binary packages and not lose time needlessly.