SilverWook said:

It's the last bit of the ESB end credits. Perhaps this is a temp until Episode 7 is out?

In any case, I'm not too surprised Disney pulled this. When they briefly held the home video rights to Jim Henson's The Dark Crystal in the mid 90's, they not only chopped out the Universal Studios logo, but the opening seconds of Trevor Jones' score as well! Glad they never got their mitts on it again.

Probably temporary. It's just a digital release so they're probably not too concerned about its permanent effect (they could even update the video streams later).

I know some fans really want to see the Fox fanfare in Episode VII. As much as we like to obsess over consistency, etc, this is obviously out of the question. Hopefully they'll come up with something that's not too distracting/awful.