Dell has already failed to impress us with their (mis)handling of the US Streak launch, so maybe it's just par for the course that they couldn't get the images of the device on the official product page right either.
There are only two images on the page that present a head-on view of the Streak . . . and one of them has the earpiece and capacitive touch buttons in the wrong place. The earpiece is supposed to be on the left.
If you look at the bottom image closely (full size here), you can see a lopsided earpiece shadow on the left side and you'll notice how misaligned the earpiece and sensors are on the right side. It's just sloppy work by whoever did the render and whoever approved the image before it went live, of course, but it's funny that someone took the time to flip the Back button icon in the opposite direction but didn't double-check that everything was in the right place.
Even funnier is that the two images shown above are actually replacements; the original head-on press shots that appeared on the product page when it first went live can be seen here. The earpiece shadow is still there in the original, but at least the buttons are where they're supposed to be!