Speaking at an event in London, Microsoft's chief executive officer, Steve Ballmer, has revealed that the company will let loose a new operating system, provisionally named Windows Cloud, at their professional developer conference later this month.

Microsoft has been long expected to unveil a cloud-based platform, and there's been much speculation on whether the company will just launch a hosted version of Microsoft's software or a new Windows operating system. If we are to take Ballmer's comments literally, however, this probably isn't something you would just run on your desktop but rather some sort of Windows Server built to manage the needs of services in the cloud.

Ballmer also dismissed the idea of creating a Google Docs rival, suggesting there simply wasn't any value in it, but admitted the company was looking to bolster the online component of its Office suite. Further details about "Windows Cloud" remain scarce at the moment, but with Microsoft also expected to discuss Windows 7 at PDC, this is shaping up to be quite an interesting event. We'll post more information as it becomes available, stay tuned.