I noticed that KTTV has added a sub channel (11.3) for the new Light TV network. Looks like another MGM based network. From the Wikipedia (https://en.wikipedia.org/wiki/Light_TV) entry, it does not look that interesting, content wise.
KCOP-HD (13.1) is 720P, the rest are all 480i. H&I and Movies! are anamorphic to accommodate widescreen content. KPXN is the same way (1 720P and 5 480i). There are some other channels with 10 or 12 sub channels.