Logitech on Wednesday announced the upcoming release of two new iPod docks, including the Rechargeable Speaker S315i and the Portable Speaker S125i. The semi-portable S315i is said to be able to provide up to 20 hours of listening time from its built-in lithium-ion battery, while charging a connected dockable iPod or iPhone. Logitech has designed it with portability in mind, as the S315i is less t
