Does Garageband '11 update come with pitched percussion software instruments?

I have Garageband '11 version 6.0.5. Last month, I did the big 1.2 gb update on the loops and instruments. The update appeared to be successful.

Now I want to use pitched percussion (marimba, vibraphone, xylophone etc) software instruments, but don't appear to have any in my library. Were these not included in the update? I don't have any JamPacks or other downloads, but it's unclear to me whether something is missing or if the library I have is what I get for this version.

I'm even more confused because this article makes it sound like pitched percussion instruments were supposed to be built into Garageband '11: http://testtone.com/developers/apple/garageband-11/contents?page=4