Mark Gurman, back in January, details updates to the Apple TV that his sources expect to see this year. Mark also points to Phil Dzikiy’s reporting on iLounge that games will be coming to the Apple TV. At the time Phil believed that the release for such an update would come in March or earlier. But, it would make more sense for an announcement such as this to take place at WWDC where they’re speaking to developers interested in making games for the device.
Maybe Amazon pushed the Fire TV out the door because they knew Apple was going to be announcing something big for the Apple TV soon.