It has been an interesting year for Amazon's App store. After a somewhat shaky launch, Amazon's Android market has grown to be quite successful. So far only American consumers have been able to use the app store, but fortunately it sounds like that's about to change. Rumors have surfaced that Amazon is planning to launch their app store in Europe this summer, and developers may even be able to submit their apps as early as next week. Currently details are slim and keep in mind that so far this is only a rumor, but we'll keep you updated as more information is released.