Long time Kindle user. I have deeply disliked the touch-only interface since it was introduced - the only reason I switched to them was because the old one with page turn buttons toon a swim.
The touch interface is great for typing, but for turning pages I find myself either accidentally pressing on the screen or it not recognising the touch at all. Touching in the wrong spot can also result in it clicking links or similar.
The idea they might be bringing out a case that has the buttond seems great, except it's only for the signature editions.
Not happy about that one.