On the heels of last week's announcement of the new Apple TV, Amazon has upped the stakes with the unveiling of the revamped Fire TV. Still commanding a $100 price point, the new set-top box supports 4K Ultra HD video (a claim Apple can't match) and features 64-bit quad-core processor and a GPU that's twice as fast. There's also Alexa, the voice-activated virtual assistant originally introduced through Amazon's Echo smart speaker. Amazon also announced a $140 gaming of the new Fire TV, which ships with a gaming controller and games, along with voice controls on the company's popular Fire Stick. Go to Amazon for more info, and look for the new products to launch October 5th.