[Update later same day: The Kindle Voyage did begin an update by itself, while it was charging. But to my surprise, that contained changes to collections and family features, not the features talked about here. I guess they will come soon, maybe UK is a bit down the totem pole. There's no doubt that sending out an update costs money, particularly for those Kindles which are using the free (Amazon-funded) cell net connection instead of wifi.]
In addition to things which must embarrass Amazon: Whispersync. It's two years since Jeff Bezos with understandable pride announced on stage that in the future you can get your book professionally read aloud to you, while at the same time you can follow the text in the ebook.
And this works and it's great... but only on iPhone/iPad! On Amazon's own devices, Fire and Kindle, this does not even work yet!
I mean holy spit, what can cause a two year delay to a pure software technology, *after* it has been announced?