Four components that were originally in the Main Index (Slider, Tabs, Logos, Boxes) have been made modular so they can be pulled in to any page template. Apart from the Slider, there is no particular expectation that they are going to be useful anywhere else, but they have been made available anyway. The Slider and the Tabs have been combined side by side to form a new Slider-Tabs module.
The Navbar has also been made modular so it can be called multiple times on a page, and from any page template you choose to create or customise as well as in the Header (where there are two calls) and the Footer (where there is one).
A new component, called the Pane, is now available. Up to three of these can be used in the theme and they can appear in any page template, although the component was designed for use on the Main Index.