Well, ladies in gentlemen, my bubble did burst.
I called directly to Gibson and the guy did few researches for me. He came to the conclusion it is probably laminated but he has an information that some of the reissues have a solid back. But mine, a 1995 model, has probably a laminated back.
He told me, maybe he felt my disappointment, that he doesn't understand this fight between solid or laminated back. For him, there's no difference in sound.
Anyway, I like my guitar so...
Sorry if I seemed pretentious yesterday; that was not my goal. It was enthousiasm!