Install a Footer on New Sites
We are all used to the universal footer, meaning it appears in the same way at the bottom of each page. This is a real time saver for intranets which now have the potential for hundreds of pages (you'll see when we get to the next feature).
You can choose not the display the footer on certain pages if you wish. It also comes with a "Small" font size to accommodate all the fine print at the bottom of your site.
Multi-level Nested Top Navigation
This is definitely necessary to migrate some of the huge sites we've designed on Google Sites. Two levels (top and dropdown) won't cut it in most cases. Now you can nest like 8 levels deep or something, it is very easy to scale up when you need to.
All this is managed for the site designer in the right sidebar within the "Pages" interface.
The results of these features is a much better platform to build larger sites. Stay tuned for more updates as they come.