What I want to see is how is Sony going to present these new Readers to the public. Usually when you offer new models you try to trump up their new features, show how it is a great improvement over the existing ones.
Now you will get a new 5" model, whose only improvement may be its price, but I suspect it's going to be in the range of the current "get it while it lasts" PRS-505 prices, so no one will buy it while the 505 is still available.
And you will get the 6" model that lost all buttons (and possibly also the front light, which maybe a good thing, unfortunately). And with no new features this 6" model is priced about the same as PRS-505 used to cost for two years before it was phased out. Why would anyone bother to upgrade?
Maybe this is not all bad...