From the patch notes 1.1
I don't understand this, does that mean that DZ will be split into different gear levels? so that Bambi 30's won't get rekt by Elite 30's?
Yes, the player level 30 darkzone will be divided in below and above Gear Score 160. This is so that fresh 30s don't run into HE equipped 30s.
(and no, you won't be able to equip gear with lower score to be placed lower, the game checks your complete inventory for the highest possible gear score you can have, and places you accordingly)