AWACS and attack aircraft will launch, the former if any enemy presence exists, the latter if enemy naval or ground (surface) units are detected. They will only launch once they detect them as hostile (ie, no preliminary launches). The attack aircraft appear to be given a waypoint or attack order to whatever is detected, so they often bee-line until they get into trouble, then run away. The AWACS just launch then fly in a circle above the base (which makes sense).

Also not by attack aircraft I mean specifically aircraft designed for attack. They won't launch multiroles with attack loadouts

As far as I know the capacity to launch aircrafts for the A.I from airbases or carriers is not currently fully implemented in the game. And there is no way (for the moment at least) to edit an airbase or carrier in order the A.I auto-launch aircrafts. So, no, until the devs update the game the airbases/carriers are dumb.

Will this airbase have fighters and bombers take off when it used as an enemy base? Unlike the previous models where only AWACs and Helos take.