I know what patent pending is. Just hoping you've checked the 2504 current ones
Large companies will normally apply for all sorts of patents. Most of them will never see the light of day. But they sometimes submit a few different designs to the patent office so rivals aren't aware which version they are going to produce.
For example Apple have already submitted 2 different designs for an Iphone Nano. One design allows you to use the scroll wheel to select the number a bit like an old style telephone. The other one has a touch sensitive keypad on the back. Who knows which one (if any) will be released. Or they may submit some more designs, but it keeps their competitors guessing.