>>26655445There's nothing to be said until we get more news. Every trailer and tidbit of info has been analyzed and talked about to death and there's simply not enough information to create anything more than conjecture.
Most people seem to think it's for synchro, but I don't think that's practical. It would be a neat gimmick, but I don't see GF creating a pseudo mega stat spread to every single final-staged pokemon out there. Not to mention the model changes.