The Russian site OneTile.ru have posted an article about two new apps located in the Windows 10 (beta) Store. The apps cannot be downloaded at this time, but their names suggest they may be related to upgrades and licensing of the Windows 10 operating system.
The apps go by the straightforward names of 'Windows 10 Core' and 'Windows 10 Pro'. No other details about the listings, including images or size can be learned. The links to the listings also cannot be opened in the Windows 8.1 Store, at least not yet.