A Nokia-built, Windows-powered tablet has been rumored before, and it's being rumored again. Speaking in Sydney, Nokia CEO Stephen Elop said the company planned to "broaden its portfolio," and tablets were something Nokia was "clearly looking at very closely," reports the Australian Financial Review.

Elop talked up the promise of a Windows ecosystem, with Lumia buyers using Windows Phone with Windows tablets, PCs, and consoles to achieve a "pretty integrated experience." As a result, he said, "Our first focus on what we look at is clearly in the Microsoft side."

After prompting from a PR handler, he followed with "But we have made no decision or announced nothing [sic]."

Nokia has built tablets before; it has a range of Linux-powered Internet tablets. In many regards, they were doing what the iPad did before the iPad did it—and before the technology existed to be thin with long battery life.

Elop also argued corporate buyers were being successfully convinced of the value of Windows Phone's Office support and its cloud services, including Office 365 and SkyDrive. He implied the lack of comparable services would hinder BlackBerry.

On the subject of Android, the Nokia CEO made a case that Samsung's increasing dominance vindicated his decision to use Microsoft's operating system. In the two years since Nokia made its announcement, HTC, Motorola, LG, and others have been squeezed, and he said Nokia had been worried "about exactly that pattern forming."