Yes it does mean exactly that.
This is the entertainment industry right?
What movie producer comes saying "hey, we have a new scene for our movie available now, so come and see it for 5 bucks more" or a book author coming up with a new chapter in his already released book? Or, you could go see your favourite band live and at the end they say "hey that's all folks, but those who want an extra song can stay for 10 bucks extra?
People would be furious if that happened... yet, in the game industry, it's apparently perfectly fine. Because it's not another game they're selling you. It's "content", for the same game. Content!!! Get it??? Well, apparently not.
But don't hold it against me, it's my opinion, on my money. On my money, I choose not to spend them on such games, from such companies.
On yours, well, I don't have anything against you doing whatever with yours, absolutely not.