you misunderstand my intent: I was merely interested in finding out if there were any new ideas in plug design than what was indicated in the wiki article.
The IEC 60906-1 design linked by ricardobeat above, for example, can handle 250V at 16A and is way smaller and more compatible with other european standards. It was designed in the mid 80s, taking advantage of the new injection molding processes popularized in the late 70s.
I was wondering if there were any other designs that took advantage of the newer technologies since: I seem to recall a concept plug designed by an art student that was on HN a few years back that folded up rather neatly: does anyone know what happened to that?