Panos Panay, the leader of the Surface tablet team, said during a Twitter chat that Microsoft will be shipping more units of the 128 GB version of the Surface Pro to select stores by Saturday

From Neowin:

Microsoft sold out of its first batch of the 128 GB versions of its Surface Pro tablet within a few hours of its launch on Saturday. So far, Microsoft has not commented on just how many units it had available for the launch of the Windows 8 Pro tablet and some conspiracy-minded Internet commenters have suggested that Microsoft kept the supplies low in order to brag that it "sold out" of the tablet on the first day.

Today, as part of a chat on Twitter's Microsoft Surface team leader Panos Panay said that more units of the 128 GB Surface Pro would be made available at Microsoft Store and Best Buy locations by Saturday. Again, he declined to state just how many more units would be shipped.

 Microsoft: More 128 GB Surface Pros in stores by Saturday