I think in the news foum they said
"the biggest advancement in 2.02 will be graphics. With the new terrain stuff in place, you’ll see improvements in that area and 2.02 will add a new and expanded library of graphic effects. Sudz has been working on this and he’s already produced a lot of cool stuff. He’s got a new fire effects in place, water splashing off of the PT boat, vehicles kicking up dust trails, guns making smoke puffs when you fire them, tank turrets getting blown off, spent cartridge casings coming out of the ejection chutes on a plane or kicking out the ejection port on a manual position, smoke coming out the exhaust stack when you start up, a lot of stuff like that."