March 2010 was the change over point.
Mines early March build, mid March arrival at delaer, late March delivery and the dealer said it was the first they had, had with this manual type.
The older one was a ring binder type.
The new ones are like a paperback book.
The main GTI/GTD manual content is also slightly different to the older ring binder one.
The new pouch that holds the paperback books is a pouch rather than a folder and is leather look(maybe its leather) VW branded one.