Microsoft’s Build 2015 conference, aimed at developers, has begun with the company on Wednesday showcasing a number of new additions to its upcoming Windows 10 operating system.

Windows 10 will be a free upgrade for most users (those on Windows 7, Windows 8.1 and Windows 8) and will released in the second half of this year. During the keynote address, Microsoft also announced that it was making latest build of the Windows 10 preview available for those who are part of the Windows 10 Insider Program. Build 10074 as it is called is now available for download