Well, the A330 seats shown above are the oldest seats in the fleet- the 747 classics used to have them too (don't know about the 747-400s). Those seats are very squared, and there are no adjustable 'wings', just a piece of headrest with the height adjustable. There are footrests.
Then came the 777 seats, which is very very tall. The PTVs were placed so high that I had to raise my head a little in order to see it. Very inconvenient and makes my neck sore. Still with fixed 'wings' and an adjustable headrest. There used to be footrests but I don't understand why they aren't there anymore.
After that the 747-400 seats came along. These seats have adjustble 'wings' and footrests. However, I find those seats way too hard. Feels like a wooden seat.
The A340-600 seat is the newest product. The newly delivered 777-300s have those seats too, although the PTV is smaller on the 777-300. Here's a link to the photo on the other site: