I saw the new user interface changes made to the New Words with Friends app, and they have placed the 'hamburger' menu icon at the bottom of the page, and moved the controls for the different views of the application to the top. I think it is an interesting design that also incorporates some changes to the interaction design and process flows (for example, now you have to go to the menu to pass on your turn).
I am wondering if in the age where a lot of navigation items are tightly clustered at the top of the screen, moving the menu to the bottom of the screen will actually help ease the clutter a little bit more.