It might or might not be put back in. I guess there’s something going on with Amazon. My publisher is working it out with them. It’s that business side…
It can be downloaded as an eBook from Smashwords: https://www.smashwords.com/books/view/350052
It can be downloaded to the Kindle, Nook, Apple device, or computer, in a variety of formats. I browsed their website and it’s pretty cool. I’ve never bought a book there but will have to try it out.
So it can still be purchased as an eBook, it’s just not in the Amazon Kindle store.