The 2013 IAAPA convention schedule is up on their website. Under facility tours, it has this listed:
Disneys Hollywood Studios Tour Tuesday, November 19
Take a very special tour of Disneys Hollywood Studio and follow the live entertainment production process from costume design to lights out at the end of the show. Small tour groups will visit attractions including Toy Story Midway Mania as well as the Creative Costuming department where Disneys computer aided design process turns out thousands of costumes annually. The tour will also visit The Legend of Captain Jack Sparrow and explore the making of this attraction. Finally, enjoy dinner and the Osborne Spectacle of Dancing Lights - an awe-inspiring seasonal event featuring millions of glittering lights perfectly synchronized to holiday music. Tour includes an exclusive back-of-house experience of Spectacle of Dancing Lights, hosted by members of the creative and production staff.
If they are offering a behind the scenes tour, it seems likely that the lights will be back for this year