User blog comment:Argorrath/Black Ops II Multiplayer Unlock Progression Revealed/@comment-1854594-20121111003605/@comment-90.204.192.113-20121111135437

...except that level 10's been the scorestreak selection unlock level in most CoDs.

It's also quite likely that before then, you'll still have UAV, Care Package and Dragonfire/VTOL, just like Black Ops 1. Except there's no "Heli" killstreak as such.