Is Harry Potter going to die in the last book, and is he Godric Gryffindor's heir?

Many people think that Harry is going to die in the last book. What do you think? Also, is Harry Gryffindor's heir? I mean, he's in the Gryffindor house, he was saved by Gryffindor's sword, he has green eyes like Gryffindor (JK Rowling said that the eye color was crucial), and he's a great dueller like Gryffindor. By the way, JK Rowling said clearly on her website that the Giant Squid in the lake near Hogwarts is an Animagus of Gryffindor, and he'll rise from the lake at the last minute! Also, who are Hermione's parents, and why don't we know much about her background?