The idea for "panorama apps" is that there's usually a large photographic background that spans all of the panels. Only one panel name (or "tab name," if you prefer that) is visible at a time, but a little bit of the next panel's content is visible. The idea is to be visually immersive and to encourage exploration of the app (sort of like the cover of a magazine where there's a main photo, headlines, and smaller photos and/or headlines to interest you). The main app header, the foreground content, and the background all scroll sideways at different speeds, giving an interesting parallax effect when swiping.
I generally point out DrexelOne, our portal app for students, faculty, and staff as a nice pano app. Find it at
DrexelOne | Windows Phone Apps+Games Store (United States). In that app, we've extended the normal design in three ways:
1) to allow changing the background photo (tab the header text to change photos),
2) to hide the foreground to see what you're looking at in the background (tap the DrexelOne logo in the header), and
3) to better support landscape views and increase information density via a "compressed header" (drag the header up to compress or down to restore).
The other common type of app is a "pivot" where multiple headers (or tab names) are visible along the top, but only one panel of content is visible. There's typically no background image and no parallax effect when swiping sideways. Generally speaking, each panel shows the same kind of information, but with a different view or filter (think about the mail app where there are panels for All, Unread, Urgent, etc.).