Endless Knight question

Eeerrrrr I think that Endless Knight would be the second book in the Arcana Chronicles not the next book in IAD series.
The next book in the IAD series would be MacRieve and it would be about Uilleam. I anticipate too the book about Lanthe and Thronos. Kresley Cole assured her fans that we will read their story but about the when she said nothing...