Garmin (GRMN) recently launched a new connected portable navigation device (PND), nuvi 1690, with several robust features. AT&T(T) will be its wireless network partner for the device. The product is expected to ship in the fourth quarter, which should enable the company to make the most of the holiday season. According to iSuppli, connected PNDs [...] (GRMN) Garmin’s New Navigation Device, the Nuvi Hits Markets