This build now supports the "Reset Skeleton" feature. This is intended to fix cases where the avatar shows up in a distorted shape as a result of incorrectly applied joint updates - for example, a non-human avatar may show as "crunched up" because it's still in a human pose. You can right click on your own or another avatar and pick "Reset Skeleton" from the menu that pops up. Note that this is an entirely viewer-side feature that only affects what you see - it will not affect how anyone else sees themselves or other avatars. Please let us know about cases where it does not produce the desired results.
We also have a few late-breaking changes to the slider support for mesh avatars, including jaw shape and head shape. Sliders that affect the scale of mPelvis now also alter mHindLimbsRoot, to better keep the front and hind legs synced up.
For updates on available meshes and animations compatible with the current skeleton, please follow http://wiki.secondlife.com/wiki/Project_Bento_Testing.