Leper Messiah TR said:

jar jar abrams is 100% guaranteed to turn VII into something that destroys sw canon more than the prequels ever had...

If in the first scene we discovered that the PT was basically a bad dream that Luke had, it would still be canon in that it would be depicted as being a dream that "actually" happened to Luke. I think JJ will do just fine. :D

Come to think of it, thank you for commenting, Leper Messiah TR, you've helped me work out how I will finally be able to work the other trilogy into my head canon; TCW really happened, and the PT was a bad dream Luke had about his dad sometime between ESB and ROTJ.