[UPDATE] A Microsoft representative told GameSpot today that the Xbox One S dates listed at Microsoft and other retailers are only "placeholder dates."

"We haven't announced a date yet," the spokesperson said about Xbox One S launch timing.

The original story is below.

One of Microsoft's big announcements at E3 2016 this week was the Xbox One S. At the briefing, Microsoft said the console would begin its launch in August 2016 and touted a $300 price. As it turns out, only the 2 TB version of the console, the most expensive model that goes for $400, will be available to buy then.

The 1 TB and 500 GB models, the latter of which was heavily touted during Microsoft's E3 briefing on Monday, will not be available to buy until December. This is according to listings for the systems on Microsoft's own online store.

We have followed up with Microsoft in an attempt to confirm the specifics around the launch timing for all Xbox One models. Here are the Microsoft Store listings for all Xbox One S models: 500 GB, 1 TB, 2 TB.

Listings for all of the Xbox One S models on Amazon also show the same release schedule.

All of these systems come in a "robot white" color, while the console itself is 40 percent smaller than the existing Xbox One. It also has an internal power supply (the current Xbox One does not), while it supports high dynamic range, though actual performance is not improved.

The Microsoft Store listings also reveal that only the 2 TB Xbox One S model comes with the vertical stand. It can be purchased separately for $20.

Coming after the Xbox One S will be Microsoft's Project Scorpio, a system that is four and a half times as powerful as the existing Xbox One. It launches in holiday 2017, though a specific release date and price have not been announced.