A rare and highly-specific series of deaths that could stop progress in the "Heart of the Matter" mission has been addressed. We expect that players who were stuck under those circumstances will now be unstuck.
Immortal characters are now significantly more immortal. This resolves some cases where mission-critical characters could die under weird or unexpected circumstances.
When selecting "New Game" in the Heartland Menu, the confirmation pop-up dialog no longer defaults to "Yes, please delete the community I've worked exceptionally hard to cultivate."
Heartland is now the first DLC option shown in the DLC carousel, so it's easier to find.