Microsoft has showcased its forthcoming Windows 8.1 update in an official preview video on the WindowsVideo YouTube page.

In the footage, Windows User Experience boss Jensen Harris provides a breakdown of the upgrade's key features, such as new Metro personalisation options and enhanced search functionality.

Microsoft has also confirmed that Windows 8.1 will feature improved multi-tasking and better support for non-touchscreen devices that sport a traditional keyboard and mouse interface, a feature that will surely please traditional Windows supporters.

The Start button from past operating systems has been tipped for a return when the update lands, and this feature is briefly glimpsed in the clip, but not discussed.

Windows 8.1 is also rumoured to introduce boot-to-desktop options and improve fingerprint reader support.

Microsoft will unveil a preview release of Windows 8.1 on June 26. For the full video, visit WindowsVideos on YouTube.

Presented by Adam Justice