No word yet if this is the final cover art, but it looks good!
Update: This is the cover art that will be used for both the Canadian and the American editions of River of Stars.
Guy Gavriel Kay's comment: "I genuinely love this cover, and am really happy to be able to share it. Authors often complain about their book covers. Allow me to be different - I think my publishers have done a spectacularly creative job. Hope readers agree."