Just because there are many references to Hoenn in X/Y doesn't make me think that remakes are any more likely.. they could be merely a subtle 'shout out' to other regions, like the statues of Reshiram and Zekrom in the palace yard.
Though to be honest, I think that instead of mere remakes, a different storyline in Hoenn would be more interesting, and because it's a big region, certainly bigger than Kanto, Johto, Unova and Kalos and rivalling Sinnoh in size, the new Hoenn games could take a different path through the region and possibly with different gym leaders and different antagonist teams, and maybe even some new Pokémon... I know R/S/E were released so long ago that some don't even remember playing them, but the general information about them is still widely available and a mere remake would have to change some of that if I am going to rate it highly.