I'm not sure when they are coming out, but I've been trying some new out drives and lightened diff pins Luther sent me before Texas. They have worked great with no signs of wear. I also replaced all the aluminum radio tray post and wing mount alumn post with the plastic ones. I thought the mud guards where a little wide and while at the hobby shop I ran across some sportwerks mayhem mud guards. They fit really nice with just minor trimming and hole drilling. I'll post some pics in a few. They are a lot narrower and lighter. They really "slim" the car up and cut weight.
Doing just one thing wont save much, but if you do 3-4 things like I've done, it really shaved some ounces.
I run a Ninja w/ a 2050 and hi tech servos. I had panther switches mounted on PL V2 wheels. Not sure if my motor, electronics and tire/wheel combo save any weight, but thats what I run...