Amazon it planning to launch an Android tablet device. There is no other way around it. Why? Because there is no reason for Amazon to launch their Android app store otherwise. There is no incentive for them to do favors to Google, or to any of Android tablet manufacturers, which are also Amazon’s competitors, by the way.
The only real reason to establish the Android app store is to create an “ecosystem” (yes, I did use that buzzword) where their next Kindle would naturally fall in place.