Still can't remove the stupid "cloud not available" nag if your kindle isn't online though, which of course it shouldn't be or they'll delete your copy of 1984.
The newer gen kindles nag you every time you go to the menu to change books, even in airplane mode. Maybe this can be turned off if you register it, but I'm tired of having to sign up to some company's ever-changing digital contract and arbitration just to read a book.
Specifically, it's a Fullscreen popover that says "cloud not available" which I of course know because it's in airplane mode! You pay 300 dollars and get treated like you're using their device instead of yours.
