Q: I have the new Apple TV (1080p), an iPhone 4S, and an iPad 3; also, I no longer have an iPod Classic. In other words, all of my devices are HD-capable, so I no longer need any of iTunes’ video content in SD. From a previous tip on iLounge, I already know how to remove the SD portion of “HD·SD” content from my iTunes library. So my question is, can I force iTunes to only download HD content from now on? Even more recent content…