Logitech's been on a roll with its well-made keyboard accessories for the iPad (the Ultrathin Keyboard Cover is one of my favorites), but there's one big problem with all these accessories: they need their own USB charging cables.
The flexible folio-style case orients to two different angles: one for typing, and one for media viewing at an angle, which covers up all keys except for a row of media-oriented controls on the bottom. Magnets will automatically wake and sleep an iPad 2 or third-gen iPad, just like the Smart Cover and an increasing number of cases and accessories.
Logitech claims that, on a full charge, the Solar Keyboard Folio's Bluetooth keyboard will last an astonishing two years when typing 2 hours a day.
The Solar Keyboard Folio is currently available for preorder and costs $130. I haven't reviewed one yet, but based on the description it certainly sounds promising.