These two books are the first of many that will slowly filter out to the other ebook platforms over the next two months as they drop out of their exclusive to Amazon contracts.
Remember, nothing will happen to them on Amazon except that they will no longer be available for Kindle Unlimited (Amazon's Subscription service)
However, I have decided to release all new releases to KDP select exclusive to Amazon for 3 months (at least) before they transition to the other ebook platforms so that people with the Kindle Unlimited may read them via the program. Of course, anyone can buy new releases at Amazon at the same time whether they are a member of the Kindle Unlimited subscription service or not. If you have any questions about new releases and Kindle Unlimited just send me a comment here and I will answer it for you.