Works is said to continue on Windows 9, the next full version of Windows prepared by Microsoft, and according to a new report, the company has already completed development of a new build.

Twitter user FaiKee, who has a good track on undisclosed Microsoft information, said in a new tweet that Windows 9 Build 6.4.9788 is already being tested right now and is very likely to leak in the coming days. He also revealed that the ISO image has 3.83 GB in size and comes as en_windows_6_4_9788_0_x64_dvd_0000000.iso.

No other details have been provided so far, but if this information is indeed true, Microsoft might actually present the very first beta of Windows 9 at the WPC conference kicking off next week.

Russian leaker WZor previously said that WPC was indeed likely to witness the unveiling of the first preview build of Windows 9, but other sources close to the development process indicate that this is highly unlikely, as the software giant is still working on some key features to be part of the operating system.

Windows 9 could be launched in early 2015 and word is that Microsoft might introduce two different preview versions, one of which is expected to see daylight sometime this year.