It IS misleading, it still states there will be an adjustment to the cost of Stages 1 - 6, and there is none.
And if the preview is just a 'idea of what's to come' it should be the correct information, and IF it's going to be linked from the ACTUAL patch notes (to the exact same preview page), than that information should be true, ninja changes and all.
They SHOULD continue doing previews, to help hype upcoming content. How would you like it if your favorite dipping sauce is coming back to McDonalds, for a very limited time, and you couldn't get any because you had little to no notice prior?
Anyways, annoyed to 'waste' a token. Also the time I was taking to plan out my game doings, you know, because I use previews to guide my next gaming path choices :p