It’s not a ROGUE ONE trailer or something like that, I checked (if it had been, you would already know). The credits last 11’. On album, the music for the end credits is around 7’40’’. So there is indeed 3’ of added material, at least music material :
Album track Medley:
- Rey’s theme
- First Order/Kylo Ren theme
- Poe & Finn escape
- March of the Resistance
- Force awakening theme (Jedi steps)
Bluray end credits Medley:
- Rey’s theme
- Scherzo for X-Wings
- First Order/Kylo Ren theme
- Poe & Finn escape
- March of the Resistance
- Force awakening theme (Jedi steps)
So the credits have been extended, or, as I assume, just been slowed down (I remember in theater it was a little bit hard to follow the scrawl, which was passing too fast, so I guess it has been corrected) with a new track inserted into the medley. Not a big deal.