Microsoft is betting big on its upcoming Windows 8 operating system, which looks to bridge the gap between smartphones, tablets and desktop computers. Microsoft CEO Steve Ballmer on Tuesday called the operating system a “rebirth” of the Windows brand and described it as the ”deepest, broadest and most impactful” Windows software ever created, Agence France-Presse reported. “It’s really, in some senses, a dawning of the rebirth of MS Windows… It’s certainly the most important piece of work we’ve done,” he said at a forum in Seoul, South Korea, adding that an estimated 500 million users will have Windows 8 on next year. The CEO went on to promise the “best economic opportunity” for device makers and app developers who adopt the company’s newest operating system. Microsoft’s Windows 8 is rumored to launch in October, and BGR reviewed Microsoft’s Windows 8 Consumer Preview earlier this year.