I started a new game yesterday after taking a long break from this game and I updated to the newest DLC package.(v 1.8)
It depends on what version of the game you started the new game with. If the 'long break' had you on a very old version of the game (Steam not set to auto-update), there may not be much we could do.
What I do want to know, however, is if you start a new game with 1.8, save, reload, that it works as expected.