not sure what to categorise this as, because it falls under many categories such as the online competion and new part ideas. This is a sub assembaly for the online CAD competion for this season, and it contains 3 new parts, these include, the 1 x 3 x 1 x 25 Channel, the Inline Bearing Block and the Chromed small wheel (It looks much better in chrome) 
That looks cool!