As you may recall, back in February, composer John Williams suggested that, with a new set of Star Wars films heading to theaters, he'd assumedly be carrying on his tradition of making noise throughout the entire trilogy. Given how vital his scores have been to the series, that made a lot of sense, but then he closed his public announcement by referring to "continued work with George," and everyone cheered despite thinking, "Shit, does he not realize George Lucas isn't doing these anymore?" It's still not certain if anyone has cleared that up for him, but we do now know that J.J. Abrams, too, naturally assumes John Williams is coming back for these things.
At the recent Star Trek Into Darkness press conference in Berlin, questions naturally turned to the other convention-spawning franchise Abrams has recently taken over, with one audience member asking whether Abrams' stalwart composer Michael Giacchino would do the score for the new Star Wars films. In reply, Abrams stressed how much he loves basically having Giacchino on retainer but went on to say, "I believe that, going forward, John Williams will be doing that film, because apparently he was there long before I was." So, yes, both John Williams and J.J. Abrams are expecting Williams to do the score. At some point before 2015, one of them should probably call the other about this.