So there may possibly be an update here:
http://www.slashfilm.com/new-disney-ad-fuels-rumors-full-star-wars-digital-re-release/
Insert obligatory speculation that it may be the 4K scans:
http://screenshotcomparison.com/comparison/94908
The ad is very low quality, so the only differences worth mentioning other than the extra cropping is the substantial bump in brightness.