According to various rumours Apple may be releasing a new Apple TV but in a different format compared to the current model. If the rumours are to be believed then the new Apple TV will be a screen-less iPod. It will only have 16GB of on board storage. It will in the main be streaming content from a Mac or the cloud.
I already use my iPhone to do this, however this new Apple TV has the advantage that it will she able to play 1080p HD content.
Probably will get one.