Microsoft’s so-called "iPod killer" could be unveiled as early as late next month, with 
the company preparing to build momentum towards an October launch, sources close to the situation have told BetaNews.
These latest developments indicate that Apple has only a short period of time to react before a barrage of marketing and publicity surrounds Microsoft’s new device. To its defense, Apple told analysts in an earnings call Wednesday night that it "wasn’t standing still."
Redmond’s moves to counter the success of the iPod have also resulted in several code-names, including Argo, Pyxis, Zune, and Alexandria. Although solid information as to the actual product details is scarce, various media sources have compiled some information from sources inside and outside Microsoft. BetaNews | October Debut for Microsoft ‘iPod Killer’