Ohhhhh....
http://badassdigest.com/2015/04/09/how-did-i-screw-up-that-star-wars-story/
Correction to what I said earlier: Apparently there were no tweaks made for this release. Content-wise it's 100% identical to the blu-rays, unless someone notices otherwise.
Devin's sources thought they were looking at the version for this digital release. What they were actually looking at was the 4k version we've been talking about since July in that other thread. That version does contain tweaks, and Han shoots first.