Its principal USP is actually something of a masterstroke. If you’re in the mood for browsing or enjoying media, it can be used as a touchscreen operated tablet. With two screens for optimum movie watching pleasure.

But if you’ve got work to attend to while you’re on the move, you can just flip the secondary screen around and you’ve got yourself a physical keyboard.

Elsewhere, the Libretto easily bears comparison with other tablets looking to steal the iPad’s thunder. The LED backlit displays are an expansive seven inches a pair. And it’s packing Windows 7, a one megapixel webcam, 1.2GHz Intel U5400 processor and Bluetooth support.

What’s more the touchscreen keyboard can be configured six different way to suit your tastes and features haptic feeback for a satisfying user experience.

The only catch – and I’m afraid it’s a major one - is that it’s not cheap. If the Japanese price of 120,000 yen – about £887 - is anything to go by, anyway. And that’s for the Wi-Fi only edition.

The 3G enabled version will inevitably carry an extra premium. But considering that you’re getting two devices in one, it’s not entirely without appeal to the cost-conscious.

Unfortunately, your chances of getting hold of the Libretto on a mobile broadband contract are slim to none. Toshiba is producing the device as a limited edition to celebrate its 25th anniversary. So you’ll need to act fast to get one when it goes on sale in the UK in August.