Most of the books and magazines out there deal with the "mechanics" of photography these days, for sure. It may be that the promoters of digital are implying that the equipment makes the image (which we know is untrue, right???). They now promote smile detection, even landscape detection, of sorts......
OTOH, how many times can you cover rule-of-thirds, perspective, where to place the horizon, etc. etc. and keep it fresh? There are a lot of classics out there ....
I have to admit, my photo book/magazine buying binges are over. The last several books I bought were about lighting, alt process and view camera use - which is basically mechanics.