check out the Graphic Novels page on NBC's site and read the new four parter (issues 13-16, "Wireless" Parts 1-4)....they introduce a NEW character, Hana.
She is also going to be featured in a special preview tonight during "Deal or No Deal" (at approx. 8.30)...set your TiVos!
Then, there'll be a new episode tonight at 9pm as well! (though no word on whether Hana will actually be integrated into tonight's episode or if she doesn't end up in the main storyline until later in the season).