Grove has announced its new Grove case ($79), the first wood case for the new iPhone. The case is being billed as ready for the iPhone 5, albeit with a note that the “final design may vary.” Made out of a hand-sanded, oiled bamboo exterior with a plant fiber core, the new Grove case is a slider-style two-piece design, with a white or black face plus a distinctively wooden back. Available for pre-order with a refundable $20 deposit, pre-ordering…