Nerval's Lobster writes "A little over a year after Microsoft released Windows 8, and a mere three months after it pushed out a major update with Windows 8.1, rumors abound that Windows 9 is already on its way. According to Paul Thurrott's Supersite for Windows, Microsoft will begin discussing the next version of Windows (codenamed 'Threshold,' at least for the moment) at April's BUILD conference. 'Threshold is more important than any specific updates, he wrote. 'Windows 8 is tanking harder than Microsoft is comfortable discussing in public, and the latest release, Windows 8.1, which is a substantial and free upgrade with major improvements over the original release, is in use on less than 25 million PCs at the moment.' Microsoft intends Threshold to clean up at least a portion of Windows 8's mess. Development on the latest operating system will supposedly begin in late April, which means developers who attend BUILD won't have access to an early alpha release—in fact, it could be quite some time before Microsoft locks down any new features, although it might double down on Windows 8's controversial 'Modern' (previously known as 'Metro') design interface. Yet if Thurrott's reporting proves correct, Microsoft isn't abandoning the new Windows interface that earned such a lackluster response—it's betting that the format, once tweaked, will somehow revive the operating system's fortunes. With Ballmer leaving the company and a major reorganization underway, it'll be the next Microsoft CEO's task to make sure that Windows 9 is a hit; in fact, considering that rumored 2015 release date, shepherding the OS could become that executive's first major test."