The videos are mostly cutscene videos involving the said characters. Though quite short, they show a bit more about what we can expect from the game. Translations have been added to them via YouTube's annotations. AC's Tales of Graces section has also been updated with these videos, specifically the Videos page as well as the pages of the mentioned characters.
Also, a scan of Nintendo Power featuring Tales of Graces has now been uploaded to the gallery (Thanks, Wonder Chef for the scan.)
A745 (or Abby, as most people call her) is the founder of Abyssal Chronicles. She is currently a doctor, but that doesn't stop her from showing her love for the Tales of Series. She loves potato chips. A lot.