The next (and last) Raksura book, The Harbors of the Sun, is starting show up for preorder in ebook on Kindle and Kobo. (It should also be showing up on Kindle UK, Kindle Canada, France, Germany, etc, just check your local Amazon.)
The paperback of The Edge of Worlds will be out in April and is up for preorder on Amazon and Barnes & Noble.
If you've already read The Edge of Worlds, please consider leaving a review or rating on Amazon, GoodReads, LibraryThing, etc. It really does help, and it's all the advertising the books will get. And it's very much appreciated.