He may have been a popular addition to one of the best-loved Sci-Fi series of all time, but Star Trek Into Darkness star has vetoed any involvement in the hotly anticipated Star Wars: Episode VII — The Force Awakens. In an interview at the Fan Expo Canada Show, Quinto quashed rumors:
I don’t think I could do it, I really don’t. And I don’t think I would do it. I don’t think  would be interested in cross-pollinating in that way. We’re going to be shooting our third movie probably –also don’t quote me on this– sometime next year, so I imagine there would be some overlay and I wouldn’t be able to do both anyway.
It certainly seems that both Quinto and Abrams will have their hands full with their respective intergalactic projects. It is expected that Star Trek Beyond will be moving at light speed in order to coincide with the 50th anniversary of the classic Star Trek TV show, so a 2016 release is strongly rumored. Abrams will be busy with star Wars 7, so will possibly take the helm for the third Star Trek reboot.
Tempers can certainly run high in fandom, especially regarding controversial casting: check the responses to Batfleck for an example of why Quinto said he was put off joining the galaxy far, far away, saying:
I think that I would be attacked if I turned up in the Star Wars franchise.
So Spock won't rock Star Wars 7...are you pleased or disappointed? Maybe he's just too attached to the Spock haircut to swap it for a Jedi do?