I am planning on calling Thinkway toys and hopefully spend some time on the phone with someone from their design department and pick thier brain on some issues.
So far, I have two of the new Woody dolls (one to keep in the box) and two buzz and the one set of aliens which I took out because I don't want to get in the habbit of buying doubles of every character.
At my locat Toys R Us, they have a new Jessie doll (not a definitive edition) but you can tell they will be using the molds from this version to make the definitive edition because it is a vast improvement over previously released Jessie dolls. Her body looks floppy like the new Woody, but her hair is plastic (I suspect the definitive version will have yarn hair). The expression on her face is fantastic - totally blows any previous version out of the water.
I haven't seen any definitive edition REX toys out yet - I think they are waiting to release him with the next wave, which I think will include Mr. Potato head.
It is a very exciting time to be collecting these toys - I am so glad they finally decided to do them right!