I've seen them around various renders sites.

Regardless, here's an article on wikipedia:
http://en.wikipedia.org/wiki/Hinata_Hyuga#Part_II

Hinata makes her Part II debut sporting longer hair and slightly different-colored clothing. Hinata's feelings for Naruto seem to have been magnified by his long absence; she wasn't able to bring herself to greet him, opting to hide instead and fainting when he rather loudly detects her. Like the rest of her teammates, Hinata has become a Chunin during the timeskip.