The fourth-generation Apple TV will have a faster processor, but will lack support for 4K video streaming, 9to5Mac reports. Sources said the new Apple TV will contain the A8 chip found in current iPhones — making it much faster than the previous Apple TV model — and run an iOS 9 core capable of reducing the size of App Store apps and improving load times for gaming. But even with all its hardware upgrades, the new Apple TV won’t feature…