Amazon confirmed as early as last September that the Kindle Keyboard would be sticking around, but much like your favorite dessert, nothing is forever. The Kindle Keyboard 3G is now showing as unavailable or out of stock at Amazon's site, as well as at Best Buy and Target. Of course, the last of those has had this here device on sale for what feels like forever, but it's still somewhat sad to see it come to the end of its road. It's entirely possible that the company's Lab126 is cooking up a replacement alongside those mythical smartphones, but it's unclear if such a conceptual piece is on the immediate horizon. We've reached out to Amazon regarding the disappearance, and we'll be sure to update this post as we learn more.