Sony has announced a Limited Art Book Edition of Final Fantasy X/X-2 HD will be available while stocks last.
The version, which will only be available through pre-order and for PlayStation 3, is coming to North America, Europe and PAL territories later this year. It'll include a 24-page art book containing original concept art of the game along with quotes and commentary from the original development team. A message from producer Yoshinori Kitase will also be included.
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And to make it clear how nicer this HD version is, the following video has been released comparing pretty well the differences between the SD and HD version.
http://www.youtube.com/watch?v=20dK5j8Kjbc