Eric Goldman of IGN on Twitter said:
Spielberg just asked us if we would be upset if the ET Blu-ray only had the 1982 version. After our loud "No!", he said, "So be it!"
I don't know how to link to specific tweets but here's his account.
Neat! It's of no consequence to me because it's my favorite movie of all time in either edition (I bawl my EYES out...) but it's cool that he just kinda put it out there like that. Can't wait! I know this'll make purists pretty happy.