Updates are usually automatic (at least in the modern days with Steam), and DLCs are optional.

Okay so by that definition, this one is a free DLC. Glad we got that cleared up lol, that was why I described it as a DLC.

I don't think of DLC as having an explicit connotation of either free or paid, it can be either. Whatever. I've now edited the title again to what I should have titled it in the first place. Hopefully everyone can put this to bed and move on to some other equally urgent internet disputes now.