What's New in Windows 10?

Windows 10 represents the first step of a whole new generation of Windows, unlocking new experiences to give customers new ways to work, play and connect. This will be our most comprehensive operating system and the best release Microsoft has ever done for business customers, and look forward to working together with broader Windows community to bring Windows 10 to life in the months ahead. 'update items' which include changes to the Metro UI (Microsoft still calls the modern UI Metro internally, apparently), Windows Defender, One Drive and improved Windows activation. There's also a mention of Cortana, Windows Phone 8.1's personal assistant, which could mean it's coming to Windows 9. Windows 10 is very much unified across all types of devices with screen sizes from 4 inches to 80 inches. It confirmed that the next version of Windows Phone - after 8.1 - would be 10.