Ok, From what I remimber from an article I read on these there are a couple of key differences.
Firing mech does away with the cocking indicator pin type thing that the 2002's have. I have a LG-100 match rifle and a Anschutz 2025 field target. The difference when even dry firing is amazing. The 2025 has a very noticable "ping" when firing... The new model incorporates a "recoil free" system sim to my match rifle
Dry firing - the new model has a mech that allows you to safely dry fire with out detaching the air cylinder.
Stock options/range of adjustment and etc. Supposed to be superior to the 2002
Hope this helps, keep in mind that I know about as much about air rifles as my dog, I just didn't want to see this sitting here empty!
Chicken