There are currently three Embarkments novellas, but I've been working on a prequel as well as a sequel, and hopefully they'll be ready in not too long. I've been going through the already published novellas as well, doing some tweaks.
Curious yet? Here is chapter one. If you want to read more, the book is available on Amazon. If you already have the Embarkment books for Kindle, you can contact Amazon and ask to get the updates sent to your device.