As my two photo gallery sites prove, I prefer sharing photos over videos. A video goes by, and if there is something interesting in it, you won’t ever find it again unless you write down a timestamp so you can replay the video and seek to that point later. But photos? You just pop into a gallery and can drill right down to find photos of what you are looking for. It is much easier for me to find something at the Branson Ferris Wheel by looking at my photos of it than looking at my videos of it.
With that in mind, here are some unprofessional cell phone pictures of the exterior of the X5 compared to the X4. Some interesting differences.
Sides
On the X4 (left), the USB port is just above the battery. On the X5 (right), only the battery is on that side and the USB port has been moved to the opposite side.

On the opposite size, you can see that the control buttons (power and Q) have been moved up a bit, and the USB port is now at the bottom. The flap that covers the USB port is very different, as well.

Bottom
Where once cameras only had the 1/4″ tripod mount, newer cameras will have indentions and such for installing “quick release” adapters. You can see how this has changed a bit between X4 and X5.

Physically, the X5 still fits in the carrying case I have for my X4 so, unlike the X3 to X4 size increase, you should be able to keep using your same camera case.
Up next … a look at the revamped (again) menu system….
Until then…