Windows 10 is expected to arrive in about six months, but Microsoft has leaked 9901 build with a redesigned Windows Store and integrated Cortana.
Winbeta posted a video walkthrough of the leaked build, which is a safer way to get a look than downloading an unofficial installer. You’ll see how Microsoft is integrating Metro design on the Windows 10 desktop.
Microsoft planned to integrate their virtual assistant into Windows 10, and it shows a partial view. Right click on taskbar and you’ll see context menu for search. Clicking the microphone tells Cortana, your are ready for a voice command. Users with Windows Phone will be automatically synced to a desktop search app.