Gaia Clary, operator of Machinimatrix.org and purveyor of Avastar, has a new video tutorial out showing the changes in Blender 2.68 weight painting. This video is just about the changes, not a basic weighting tutorial. It is however a must see for anyone doing weight painting. 6:29 minutes.
The addition of weight tools to the Blender Edit Mode is great. The improved vertex weight editing in the right-hand Properties panel of the 3D window, is a major help in figuring out what’s wrong with a weight painted object that is misbehaving.
You can discuss and ask questions in the SL Forum in: Blender 2.68: Weight Tools Overview. If nothing else stop by and thank Gaia and click the KUDO’s button.