A couple days ago, Microsoft’s base-level Surface (32GB version without Touch Cover keyboard) completely sold out in 24 hours. While that was an impressive feat, it now seems that the 32GB and 64GB versions, both including the Touch Cover keyboard and thus more expensive, have also sold out. This means that you can no longer pre-order a Surface, no matter how badly you want one.

If you really want one of Microsoft’s flagship devices, you will be forced to make it out to a Microsoft store in order to purchase.

Does this mean that the Surface is wildly popular and that people are willing to do anything to get one? Maybe, but not necessarily. In fact, the company has actually admitted the the pre-sales inventory will be very limited. While we don’t know the exact numbers, we can only assume that the devices that were available for pre-order won’t stack up to be any significant sales numbers.

Additionally, the company’s chairman, Bill Gates, has now gone on record talking about how great the actual product is. While it was previously reported that the surrounding companies aren’t exactly excited for the launch of Microsoft’s new software and products, it seems that they are in fact remaining very optimistic.

Gates emphasizes that the Surface is a big step in bringing Windows into a more natural way of computing. He says that the device is more than a watered-down version of Windows, but is rather a true and complete PC experience. This is because Microsoft does not want to “give anything up” when creating a tablet device. Which is why a keyboard comes standard with the Surface, not as an optional add on.

The most interesting part of the interview is when Bill Gates says that they are ultimately considering Windows 8 and Windows Phone 8 to be the same platform. We have noticed Apple taking similar approaches with Mac OS X and iOS, but nothing as drastic as what Microsoft is doing. It seems very clear that future computing will not be spread across different operating systems, but rather the same operating system spread across different devices.

Whether other companies like Apple and Google choose to completely merge their mobile and desktop operating systems remains to be seen. However, it is clear that have the same operating system will create a much easier experience for the consumer.