Microsoft on Monday sent out invitations to a September 30 event at which it is expected to provide a glimpse at the next version of its Windows operating system.

The US software titan revealed little with invitations that read: "Join us to hear what's next for Windows and the enterprise."

The event slated to take place in San Francisco will be aimed at developers behind programs designed for computers powered by Windows software, and at businesses that depend on Microsoft programs in their networks.

Microsoft was said to be working on a separate version of Windows for smartphones and tablets, as it works to adapt to lifestyles centered increasingly on Internet-linked mobile devices.