At this point, particularly after creating their own app store, it would be more of a surprise if Amazon didn't have at least one Android gizmo in the works, if not a whole series.
What's not clear is whether it's going to be the full Android experience, including Google's closed-source apps (Maps, Gmail, and most important, the Market), or whether it will be more like the Nook Color --- core android without the closed Google apps, plus Amazon's own app store only. (In which case, you'd need to publish to Amazon's app store, and let Amazon arbitrarily cut the price and your royalty, in order to get anything on these devices.)
The rumor-level info that Google's involved in the project could be taken as a hint that Amazon's not planning to go so completely their own way... but only that.
What's not clear is whether it's going to be the full Android experience, including Google's closed-source apps (Maps, Gmail, and most important, the Market), or whether it will be more like the Nook Color --- core android without the closed Google apps, plus Amazon's own app store only. (In which case, you'd need to publish to Amazon's app store, and let Amazon arbitrarily cut the price and your royalty, in order to get anything on these devices.)
The rumor-level info that Google's involved in the project could be taken as a hint that Amazon's not planning to go so completely their own way... but only that.