There were a lot of wpn changes and solo scenarios for wpn progression and xmog. That alone is a big chunk of stuff the problem most only see a tiny fraction of it. This isn't the only new content lost on most. The pet battle dungeon flew under the radar for a lot of people. Being able to do Kara in heroic and mythic + misses 2 different groups of players, same withe the addition of CoS and Arcway heroic. The broken shore and invasions are the only things that seems to hit everyone and due to the schedul8of invasions some people are still missing out on that. There is also a raid being linked to the patch even though it is months from release.