This is the most frustrating thing about Mapex. They introduce a new line or new features, then less than a year later, the completely scrap those features for other newer features. They literally are never consistent about anything.
Example:
I bought my Velvetone kit in 2012. A year later, they changed the tom mounting system, and then changed it again to the soniclear mounts. The floor tom legs were then changed a year later, as well as the bearing edges when they introduced the soniclear bearing edged.
There's no consistency with these guys to the point where one would have to question ever spending top dollar for one of their premium kits.