Once your connectors have finished updating to 7.x.x any upgrade to a newer version does not require a reboot. For example, if you update from 7.2.11 to 7.2.13 you do not need to reboot the host. Same if you were to update from 7.0 to 7.1 no reboots needed. But if you are updating from 6.X to 7.X you need to do the reboot since connectors prior to 7.X did not have this feature.
Let me know if that helped.
Technical Marketing Engineer - Endpoint Security
SSCP - 743085