If this dlc is like the others, it's already on disc. The season pass is just a small download. I haven't heard about this dlc though. I'm sure there will be plenty of ways to chip away at the price tag. This is CAG and it ain't our first rodeo.
I'm shocked no on actually addressed this dum dum yet. None of the DLC was already in disc for the first two expansions. Areas wee accessible if you glitched into them, but they were incomplete. And also, they're just recycled spots from original missions with one or two new sections added. Everything else, all assets and in game items were provided via patches. For example, House of Wolves, which just launched last month, had three patches prior to release. These patches loaded the DLC into the game world so that when HoW was unlocked, you could play right away. You preloaded 2-3 GB worth of patches before the release date of the DLC. Did you just think that was for the hell of it? Then on release date, they pushed one small update that unlocked everything.
Please stop spreading misinformation when you have no idea what you're talking about.