Canon 3: The original trilogy in its unaltered state, plus any new Disney movies that might come out. I justify not including the Special Editions/prequels by assuming that the people working on the new movies have a love for the originals similar my own love, so their head canon probably involves the unaltered originals and not the Special Editions.
They had Ewen McGregor reprise his role as Obi-Wan in TFA and are having the actress who played Mon Mothma in RoTS reprise her role in Rouge One.