Natura 1600 is a new film produced with "nano-stractured sigma grain technology"(that's what fuji says, I don't know what it means).
There's new Natura wating.
http://www.fujifilm.co.jp/press/img/nrj1439_l.jpg
"NATURA CLASSICA" with 28-56mm f/2.8-5.4
looks cool, doesn't it ?