If I understand correctly, Matt is adding a function that will work on fields that have store 10 star ratings. That's the key: There has to be a field defined that can STORE these 10 star ratings. This new capability of a "10 star edit type" doesn't define any fields in the library to HOLD these ratings, as far as I can tell.
It's up to the individual user to decide whether or not to make a field to hold 10 star ratings. To do so, you need to go to the library fields manager in Tools > Options > Library & Folders > Manage Library Fields. Then Add a new library field. I would give it a name like "Rating10", or something that makes it obvious. Under "edit type", you select Ten Stars, and Data type of Integer. That should make the field work.
From there, you can display that field, simply by selecting it in any view from the columns. I tested it and it showed right up as a 10 star field that I could click in to set or clear up to 10 stars. Neat.
Hope that helps,
Brian.