Amazon had a successful first year with its Appstore; outside of a false start, however, no one beyond the US could enjoy it. That looks to be changing, if whispers to AllThingsD turn into shouts. The reputed insiders have Europeans getting their crack at the third-party Android store sometime in the summer, with app submissions starting as soon as next week. Amazon hasn't confirmed anything, so don't be surprised if the Appstore isn't packing its bags for the trip just yet -- especially as other services like Instant Video haven't made the jump. Should the Appstore go on a European vacation, though, it could be an early preamble to the Kindle Fire following suit.