Why wait for Mango when you can get the first Windows 7 phone?

Back in May, when Microsoft announced "Mango," the first major update to Windows Phone, the Redmond company named some new hardware partners who would launch devices running Windows Phone Mango: Acer, Fujitsu-Toshiba, ZTE, and Nokia. So far, Nokia's "Sea Ray" Windows Phone Mango device has been shown, and Acer's W4 was shown off at Computex in Taipei. Tuesday evening, Fujitsu Toshiba Mobile Communications officially announced its Windows Phone Mango device, known as IS12T.

IS12T includes some impressive capabilities, including a waterproof and dustproof chassis, a 13.2 megapixel camera, and 32GB of onboard memory, and will be available in Japan beginning in September 2011. Global availability and further specs have not yet been announced.

Though the high megapixel count and ruggedized chassis are big differentiators for the IS12T in the mobile space, Fujitsu launched a much, much more interesting phone just four days ago in Japan: The world's first smartphone powered by a full version of Windows 7 Home Premium 32 bit (SP1).

WIth a 4" (1024 x 600) LCD touchscreen, 1.2 GHz Intel Atom Z600 Processor, 5.1 megapixel CMOS camera, full QWERTY keyboard and built-in trackball, Fujitsu says it has created the smallest Windows PC, and with a single button, it can switch from PC to phone mode. While in phone mode, the F-07C has between 370-440 minutes of continuous talk time, and in PC mode, the device has about a 2-hour battery life.

NTT DoCoMo launched the F-07C on July 23 and charges ¥72,030 ($925) for the device and a two-year Microsoft Office 2010 personal license. It seems highly unlikely that this device will ever reach the shores of the United States through a mobile network operator.