The latest leak in Office 15 show off a new application codenamed "Moorea". Mary Jo Foley suggests that it may be related to Microsoft Office Labs Canvas for OneNote.
Canvas for OneNote allows you to navigate and edit notebooks in a new way by providing a high-level canvas-view of all your content. The prototype lets you zoom and pan around; view and organize content in new ways; add new pages right where you want them; and even locate pages in a timeline view.
The tagline for "Moorea" is "everything you need in one place" which would mean that it's an aggregator of content. Most likely personal content that'll allow you to place all of your information related to a topic into one, user defined, interface that allows you to quickly access all of your information about a particular topic. Imagine you're doing research on birds; You could have your documents, images, and videos all in one place.
The images is from the build 15.0.2714.1001.