Well I just finished reading Naruto Manga 367 and Naruto's parents have been officially revealed. It's already obvious that the 4th is Naruto's father, but we now have the name of his mother. Uzumaki Kashina, a kunoichi of the former Whirlpool Country. She had red hair, a tendancy to constant jabber and a tomboyish demeanor as described by Tsunade and Jiraiya. While the two talked, Tsunade said that Naruto reminded her more of his mother, but of course his resemblance to the 4th was uncanny. That's all I know at this point.