It didn't launch for everyone. I'm on a kindle fire tablet and it's not in my app store.
Damn you Amazon! I have a kindle fire six and no smartphone. They may release it but I sorta doubt it.It's not going to be released for Kindle, but I enabled my Kindle to use Google play store, so I've been playing on my Kindle for a month. Depending on how new your Kindle is (I think you need Kindle 8 or newer), you can do the same, but there's a bunch of steps and downloads. It was a pain, but if you wait for it to be released for Kindle, it may be months...or never.