Logitech has unveiled its new Solar Keyboard Folio case for the iPad 2 and third-generation iPad. As the name suggests, the Solar Keyboard Folio is a folio-style case, featuring a built-in Bluetooth keyboard that is powered via integrated solar panels that charge the battery when exposed to light, built-in magnets that activate the automatic sleep/wake functionality, and two different stand angles. Logitech’s Solar Keyboard Folio will be…