Yeah it's an addon. I just got it. :)

It's got some really nice morphs that work on parts that weren't adjustable before.. 

I love the new morphs for the shoulderblades, ribcage and chest shape. Got some really nice new morphs for the hips, legs and butttocks too

Also found a whole bunch of new base expressions along with the faces, which is really nice!
Also came with some new height morphs, but unfortutunately they aren't "regular" morphs, so they aren't available in morcloth and so on, which kind of sucks.. I've always wanted a good, solid height morph that can be applied on clothes too.. Oh well.

It's free, and definitely worth installing.