From my direct experiences, and many threads here on the UTGF, it seems that Taylor's web site can be rife with little errors - things like bone versus Tusq nuts and saddles, and neck width, and top wood. Sometimes it is hard to proffread your own work.
While we love koa, the missus and I are pretty content with her GS Mini mahogany, and we already have two koa Taylor guitars, so won't be rushing out to buy one. That just leaves more for all of you.......