Windows Phone 8.1 lands alongside Cortana Microsoft ends support for Windows XP Windows 8.1 Update coming on April 8 Windows Phone 8.1 unveiled at Build 2014 Windows XP 'used by 77% of UK firms' Sony: 'We won't turn to Android Wear' Banks hit hard by Windows XP support end Asus 'urged to scrap dual-OS PC plans' Apple releases iOS 7.1: Find out what's new Android 'most popular tablet software' Windows 8 reaches 200m licence sales Windows XP gains market share in January Samsung Tizen OS hits early hurdles? Windows 8.1 spring update leaked Google challenges hackers to crack Chrome Windows Phone gets market share rise Windows 8.1 update to improve for PCs? Microsoft 'to unveil Windows 9 in April' Nokia's Android phone UI leaked - picture Samsung OS Tizen screenshots leak Windows Phone to get notification centre? SteamOS now available to download Steam hardware begins shipping Friday Ubuntu Touch OS secures phone partner Start Menu to return in next Windows? Windows 8 update 'to match Xbox One' Nokia has 90% of Windows Phone market Windows RT 8.1 update temporarily pulled What's new in Windows 8.1? Essentials Windows 8.1 launches for PCs today Chrome to work on Windows XP until 2015 Microsoft: 'Surface RT caused confusion' HTC Sense 5.5 screenshots leak Jelly Bean on half of Android devices Apple to release iOS 7.0.3 next week? Start button in first Windows 8.1 advert Valve to launch Linux-based SteamOS Nokia 'considered switch to Android' Windows 8 market share rises above OS X HTC developing its own operating system?