Since april 2012, I directed the writting of a Qt 5 book in French : Créer des applications avec Qt 5. It was released in november 2013 and is available for purchase in French on the editor website: D-Booker.
It has been a very intense and long work in collaboration with the editor and five authors, the result is a book of 650 pages. The main themes are Qt Quick, news in Qt 5, migration process between Qt 4 and Qt 5 and Graphics View framework.
If you are a french speaker, you can read free exctract from the editor website (tab extraits). Everybody can also access example’s source code in the book public repository.