Owners of the Samsung Jack on the American AT&T network will be receiving a free upgrade to Windows Mobile 6.5 over the next few days, adding new features, functionality and stability to the popular Samsung smartphone.

New functionality includes access to the Windows Marketplace app store and a major browser upgrade with Internet Explorer 6 Mobile; this latest Microsoft mobile browser offers new support for Adobe Flash and Microsoft Silverlight.

The Samsung Jack OS update will also allow users with access to AT&T’s nationwide WiFi hotspots and the Vlingo service for Windows mobile, allowing users to perform many tasks, such as making phone calls and sending text messages and emails, with their voice alone.

The Windows Mobile 6.5 upgrade for the Samsung Jack from AT&T can be downloaded from the Samsung website.

Samsung has just informed us that the Windows Mobile 6.5 update for the Samsung Jack smartphone for AT&T is now freely available for downloading. The Windows Mobile 6.5 update will add new functionality to the Jack, including access to the Windows Marketplace application store, and the new Internet Explorer Mobile 6 web browser, with Adobe Flash and Microsoft Silverlight support. The update will also provide users with access to AT&T’s WiFi hotspots as well as the Vlingo for Windows Mobile, which lets user carry out many different tasks on the phone, such as sending an email message or calling a friend, with nothing but their voice.

The Windows Mobile 6.5 upgrade can be downloaded from Samsung’s website.