Microsoft has confirmed what many people predicted - Office 2019 will only be available on Windows 10 devices, leaving those using older iterations of its platform out in the cold.

The productivity suite is expected to launch in the second half of this year, the company revealed, with previews available in the second half of the year. Alongside the shipping and preview information, the company said Microsoft Office 2019 will only be available for Windows 10 SAC release, Windows 10 Enterprise LTSC 2018 and the next LTSC release of Windows Server.

"Modern software not only provides new features to help people do their best work, but also new, more efficient manageability solutions and more comprehensive approaches to security," Bernardo Caldas, general manager for Windows, and Jared Spataro, general manager for Office said in a joint blog post.

"Software that is more than a decade old, and hasn't benefited from this innovation, is difficult to secure and inherently less productive. As the pace of change accelerates, it has become imperative to move our software to a more modern cadence."

Microsoft also said it will not be offering a 'Microsoft Installer' (MSI) as a deployment method - users will only be able to install the application as a "click-to-run" product.