Ah, that's... not what the tier updates post says. (EDIT: Oh, I see. It's in the detailed description here, but not the summary block. Oy.)
So the only real change on May 1 is that the minimum upvote less than 100% goes up from $0.01 to $0.03... and you have the option of a Steem-per-month subscription?
Why is this such a big deal, again?
RE: Qurator Tiers and Upvote Weights Update - 17/04/2018