I have updated two of my books, Xbox One: From the Original Xbox Until and Playstation 4: What We Know thus far.
Xbox One: From the Original Xbox Until Now is now at version 1.4.
Version 1.4 contains updates from Microsoft's E3 Presentation including price, availability date and more updates regarding used game policies.
If you have already purchased this, you should be able to receive an update. You may have to delete the book and re-download it to receive the update. If you have not yet purchased the title, you can do so from Amazon, iTunes (ePub) or iBooks.
The other title that was updated is PlayStation 4: What we know thus far. This is now at version 1.2.
Version 1.2 include additional social features, PlayStation Plus pricing, availability date, memory dispersion, additional sharing options, and PlayStation Vita TV.
As with the Xbox One title, if you have already purchased this, you should be able to receive an update. You may have to delete the book and re-download it to receive the update. If you have not yet purchased the book, you can do so from Amazon, iTunes (ePub) or Google Play