It might be made. It would depend on how much money both X and X-2 made, and if they thought that they could make X-3 more appealing to most fans than X-2 (assuming X-2 didn't live up to expectations). A prequel of Braska, Jecht, and Auron in their summoning trip would be nice, and all the Auron fans would like it, while they might not have liked that he didn't really show up in X-2. I wouldn't rule anything out yet. Square Enix is willing to make sequels, as evidenced by the new FFVII and KH games. I wouldn't be surprised if they decided to make a sequel or prequel to X/X-2. If they think there is money there, they will.
