Bandai Entertainment USA has recently issued a press release announcing the the localization of two Tales of the Abyss spinoff mangas.
The two spinoff manga series based on the game are Tales of the Abyss: Asch the Bloody (???????, Senketsu no Asch) and Tales of the Abyss: The Reminisces of Jade (???????, Tsuioku no Jade). Currently, the Asch manga is listed in Amazon.com for a $10.99 price and an August 16, 2011 release. Aside from being sold separately, the first volume of the Asch manga will also be available as a bundle with the limited edition of part 1 of the Tales of the Abyss anime that is to be released this June 7. The bundle is listed for a $34.98 price. If you choose to buy just the anime alone, it's for $29.98. No additional news yet on the Jade manga except for that the first volume will be sold separately.
Correct me if I'm wrong, but I believe the two mangas are already complete in Japan, both consisting of only two volumes each. This info is from The Anime News Network, with thanks to Danette-Anime-Otaku for the heads up.