What won't be in The Hobbit

[Tuor in Gondolin]

And how will Gollum be integrated in movie?
Perhaps Gollum reliving in his mind his coming
to the Misty Mountains as he hears Bilbo
coming to his lake (ala the extended dvd).
And the movie could end with Gollum coming out
of the mountains and start searching for the
precious (and even seeing Gandalf and Bilbo
afar off returning to Erebor).