Somehow this one just snuck up on me: a new TV series from Spielberg's people, inspired by Bradbury's classic short story "Zero Hour". The premise of the story is that an alien invasion takes place through children's play, and the story has been adapted for radio and TV countless times.
The trailer for the TV series clearly presents this premise - although it looks as if it rapidly moves to Close Encounters territory - with perhaps a hint of Bradbury's "The Small Assassin" thrown in for good measure.
I don't see anything yet from the ABC network to confirm the Bradbury connection, but it's been mentioned in a number of places such as this announcement in Variety. There's a bit more (but not much) about the series here. And here is the trailer: