So far I have identified the following
Auspex- able to sense Astrid in the morgue, generally extremely perceptive, and some of the visions could be higher levels of this power, not to mention the telepathy/telempathy he exhibits-this could become full blown telepathic ability or stay within Auspex. Also psychometry when in the location of the boy's disappearance and when touching Fabian's hand- could be a separate power on it's own.
Potence- less pronounced unless you work on Prowess, but affects his ability against the vastly stronger feral Nos, axe in mouth etc.
Celerity-without a doubt, as pointed out above and in many many many other of my own posts, the MC is first on the scene, blurred speed to get to Sharon in the woods etc, and grabbing the stake/killing the hulking huntard.
Mega Claws- these are more potent than the Wolfie Boy clan gets according to Markus following the observation of the reaction of one of Marcius' thugs to just a scratch
Vanish from the Mind's Eye and other Obfuscation powers as exhibited if you develop Stealth trait.
Whispers which seems to be mind reading and the ability to shape or coerce thoughts without meeting the subject's gaze which Dominate requires and is what Sharon uses. Also incorporates a charm component, and if misused to have sex with Mirri gains you the Soul Rot trait.
Presence-used in the club while working on your charisma trait when you get the girl to look at you without saying anything.
Expectations/Speculations
Probable warform of a Bear-see Calisto/Apollo/Zeus/Artemis legends-further development of the Claws
Prophetic Dreams of the past, present and future- see visions while in daytime torpor-either Auspex hyper development or new power
Domination- His sire uses Dominate when getting him to come with her when he first met her.
Possibly more, but he almost certainly will get or has the above.