Company executive Paul Amsellem told French newspaper Les Echoes that the Finnish phone maker is targeting a June launch for the unnamed device.
"In June 2012, we will have a tablet that runs on Windows 8," he told the publication.
Nokia CEO Stephen Elop previously hinted that the firm's Lumia 800 series could be a precursor to Windows-powered tablets. The new handset arrived in the UK today, powered by Windows 7.
Microsoft is yet to announce a release date for Windows 8, but it is expected to arrive sometime in 2012. The mobile version of the operating system, known as Windows 8 Metro, was previously confirmed to feature a dedicated app store.
Dell and Hewlett Packard are among the other tech firms rumoured to be releasing Windows 8-based tablet devices in 2012.
> Read our review of the Nokia Lumia 800