Microsoft’s (MSFT) new Surface Pro tablet sold out quickly online and across the country following its launch last week, but extremely limited supply was the likely culprit; reports suggested some stores received only one or two 128GB models for their inventories. Consumers and enterprise users interested in the sleek slate were left wondering when it might become available again and Microsoft recently cleared the air in a blog post. The software giant turned hardware hopeful said it has already begun shipping additional 64GB models to Best Buy (BBY), Staples (SPLS) and Microsoft Store locations around the country, and 128GB Surface Pros will ship later this week. BGR reviewed the Surface Pro last week and said that while the device does have some drawbacks, those who look past them and purchase the tablet will not be disappointed.