Call of Duty: Black Ops 3 multiplayer features the return of the Call of Duty: Black Ops 2 Pick 10 system; however some changes have been made to how it works. Pick 10 only features guns, grenade selections, and perks. Scorestreaks and the new Specialist character features are separate, and those are now chosen before matches start. Treyarch is not revealing any more details on that as of now.
Polygon has received new information regarding scorestreaks in Black Ops 3. Black Ops 3 scorestreaks include the UAV, RC-XD which has now been re-named to HC-XD, a hover capable explosive device. Air support streaks include the Wraith, similar to Hunter Killer drone, and the Mothership, which allows three players to control. There’s also the RAPS (robotic anti-personnel sentry), which is a cluster of rolling explosives. And the last streak revealed as of now is the GI Unit, a UI solider that can patrol or guard a player.
Black Ops 3 Multiplayer will be playable for all attendees at E3 2015, so more information should be coming soon.