If they really are, I'm not keeping any high hopes of them revealing it anytime soon. For the time being, I'll just be satisfied with them workin' it on stage. I did notice though that Shuya is being used exclusively by Ayu since AT07, which coincides with the year Ayu and Tomoya broke up. Who knows.
I'm just lovin' my AyuxShuya fandom almost like any other anime pairing fandom I've ever had. XD