According to Joint-CEO of CDPOR Michał Nowakowski:
Three months after the release of Hearts of Stone & Blood and Wine we were at 22% and 24% att rate. We landed between these values with Phantom Liberty in a similar timeframe
TBH, the decision to go through with the expansion so long after launch of the single player game was a bit counterintuitive. But what happened is a proof to us that solid content that people are happy with is the way to go.
https://twitter.com/michalnowakow/status/1744391955281306096
For me it’s Terminator Resistance.