From TeamAyu site.

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RPG 「Tales of Xillia」, to be released on 8 September 2011 by Bandai Namco Games, will have new song 「progress」 as its theme song!
The promotional video can be viewed on the ayumi hamasaki official channel.

■ayumi hamasaki official channel
http://www.youtube.com/user/ayu

■「Tales of Xillia」 Official Homepage
http://tox.namco-ch.net/