Prior to February 1, almost nothing I wrote got curated. Since then I've had a curation rate of 91%. Even things that are supposedly not eligible for curation, for instance two articles I published over the weekend that were clearly about Medium, got curated.
My earnings have increased steadily since the change. For April I made about 6x what I earned in January, even though I wrote less (20 days as opposed to 31). That 6x doesn't include the member-engagement bonus for April, which I also received.