T-mobile and AT&T join forces under the wing of Microsoft to launch an HTC Smartphone in one week from now, as reported by sources. The rather anticipated device will run on Microsoft’s most recent and hottest-debated attempt to gain back its share of the mobile market – Windows Phone 7 – and will finally reveal what’s all that buzz is about.

“Microsoft is launching with AT&T and T-Mobile first because they both run on a global wireless standard called GSM. Windows Phone 7 handsets compatible with the networks that Verizon Wireless and Sprint Nextel Corp. (S) operate are expected to hit the market next year.”

In addition to practical reasons, the phrase “the more carriers, the better” as quoted from an analyst at Mobile Perspectives, a research firm, can’t be anymore true about Microsoft’s Windows Phone 7. Rapid and extensive distribution is key in achieving an adequate amount of demand for its OS; something Microsoft truly needs to accomplish in case it’s planning on increasing or even maintaining its current %5.5 share of Smartphone OS market.

T-mobile is not encountering its first premiere launch of high-profile Smartphone OS. It will also go down in history as the first carrier partner of Google’s Android amidst its initial uprising, but as it turns out, that doesn’t really concern Microsoft – it’s living for the moment, and long-term profits.