There has been much speculation and questioning about the locking system and feathering system architecture. I would have no reason to presume that the SS2 architecture of these system is significantly different than the Architecture of the same systems in SS1. It is presumed that the changes that were instituted from SS1 to SS2 were driven primarily by the need for increased size. This meant that the cockpit and cabin size needed considerable up sizing, necessitating changes such as the escape system ( no more ejectible nose cone), dual controls and an enlarged rocket motor. SS1 was a tested/proven system within its design context - no reason to change it.
The only facts that we know about the architecture to-date, is that both systems were pneumatic and the locks have been described as "hooks". This fits completely with SS1 architecture. I suspect that the SS2 architecture was an enlarged and more robust version of the SS1, which is shown and described in detail in Scale Composite's patent application for same:
http://www.spacepatents.com/patented...pat7195207.pdf
Fig. 7-9