Great article: Will there be GMO sugar in your candy? describes Hershey's lack of an answer about whether or not they will use sugar from GM beets in their products. In the past, Hershey, Mars, and others did NOT want to use sugar from GM beets and actually kept the beets "out of the ground."
Now? Sounds like they gave up. The article's author had an incredibly hard time getting answers, but the non-answers she did on whether candy makers will use sugar from GM beets get roughly amounted to "do we really have a choice?" Sigh. Good for Organic Consumers for calling for a boycott.