- Little Green Men
Set 7596 (Trash Compactor Escape) will have dirty variants of Woody, Hamm, The Little Green Men, and Lotso. Set 7599 (Garbage Truck Getaway) will have these variants for Jessie, Buzz, and Lotso.
Most of the minifigure's parts remain the same as the "clean" variant figures. The main differences are printed smudges and stains that have been added. The Jessie figure does appear to have a different facial expression on the head. Other figures may also have different facial expressions from the original, but its difficult to tell from the current set of photos.
Army Building Potential
I imagine the ABP for these figures is low. A novel way to add variety to these sets, but I don't see aspects of the figures that would be desired in multiples.
I think if a collector is seeking to fill out a LEGO Toy Story collection, then these figures have appeal. Beyond that, it seems kind of silly. Once the sets are released we will have to see how collectors have voted with their dollars in the secondary market.
(Pictures from Amazon.com)