It’s no secret that Apple TV – the company’s would-be digital hub for your living room – isn’t selling like hotcakes. Late Friday, Macworld published new Apple TV sales estimates from Forrester Research: the firm guesses Apple has sold 400,000 of the gadgets since it went on sale this spring and may sell another 400,000 during the holiday shopping season. But Apple will likely miss Forrester’s projection of selling 1 million Apple TVs this year.