Nope not fixed in the newest version. I thought it might be but checked 10 minutes later and it doubled in size the continues to grow. Dave you might want to check that Data size again. It didn't do it right away I'm now at 1GB again.
I checked my Kindle Fire and it's Kindle data is at 450MB. I have more books on it so I suspect that is where this Kindle Android app should be around. This is ridiculous!