That was a potentially confusing piece of information, wasn't it? I know I jumped straight in and compared Durasharp (yellow) and the Classic side by side and, like you, found a distinct difference. Durasharp (yellow) is quite a cut above the Classic. Not that the Classic is not a nice ride, but the Durasharp is top-tier. Both are listed on the current website, so guess the Dursharp (in yellow) is here to stay.
The new New Double Edge I mentioned above is shown here on the right and I've also put a picture of the Black Beauty packaging to show the confusion. Although this is new packaging (certainly to me), it also looks to be discontinued.