The Titans is not a free patch, it is an expansion pack. You can find out what the major changes were by following the links on the main page of this website.
Take my love, take my land, take me where I cannot stand.
I don't care, I'm still free, you can't take the sky from me.
Take me out to the black, tell them I ain't comin' back.
Burn the land and boil the sea, you can't take the sky from me.
There's no place I can be, since I found Serenity.
But you can't take the sky from me...