See this fact sheet, for example, on the timing. An update during the Kickstarter said Damien would not be in the game since it was set before Beyond Divinity, but that was changed (or that part of the story developed more) before the release of the game, as was mentioned in the release announcement press release (that was in an older version of the press kit [which I downloaded at the time, but can not find now] but not in the current one). The exact date was set a year and a half before the game's release, and the plot for some time before then was that D:OS 2 happened after Beyond Divinity.
I have not heard of any changes after the release of the game.

Lucian faking his death before D:OS 2 is a separate event from the later case of him being captured by Damian (and presumed to be killed by a dragon knight) before Divinity 2.