While this information has been known for a while (See: While No Set Release Date Yet, Voice Recording for Tales of Xillia’s English Dub Completed!), Hideo Baba (Tales Series producer) has recently shared this brief message confirming that the international release of Tales of Xillia will include English dub and text support.
In addition, similar videos have been released in French, German, Italian and Spanish confirming language support for each.
Check out my review for the Japanese edition of the game HERE.