CallMeTheDoctor
Super Freak
Really hope that this is now par for the course and Disney includes 3D in it's initial Episode VIII release...but again, they know Star Wars fans will double dip, and can rationalize the 3D release with Rogue One as it's outside of the main story.
My guess was that TFA was a testing run. I can see TLJ having 3D and regular versions at release.