That is right. A developer is working on a muscle simulation system for Blender. Its currently in pre-pre-development. But the developer seems pretty steady at working on it.Dan (handydan) discusses the details of his system a bit more at a Blender.org forum thread. A quote from the thread:
My method for creating muscles, is very similar to theirs except, they have four end points (2 at each end), whereas mine has only 2, and from what I can see they can only attach their muscle endpoints to vertices on a mesh whereas with my system you will be able to attach to faces as well. There's also some differences with the way you modify the individual sections.In regards to how it works. Mine is a volumetric system rather than a weighted one, which should be more realistic and easier to setup (more difficult to code though).Â Â Â Â
This could be an exciting development for Blender. Give him your thanks and encouragement.