I think they've left it very intentionally vague to build hype around it, though I won't be surprised if Kumba's Revenge turns out to be a completely different experience. BGT is in desperate need of a dark ride so I could see something like that using the Kumba theme. I feel like a giga or a (somehow) extended layout is less likely than anything else.
I'll forever be upset that I won't be able to experience Kumba, but in the end it'll be like any other roller coaster whose time has come before I got to ride it.
Live entertainment, daring performances, unique food, family activities and a lakeside nighttime spectacular make Boardwalk Nights one of the highlights of summer at Cedar Point.
FULL STORY: https://themeparksbydon.com/cedar-point-boardwalk-nights-2026/
For Kings Island, I think it did. KD, Dorney and a few of the others were the parks that didn't get an "upgraded" Haunt but still attempted to charge.
People still bought at KI, CP, Cwland. I can't remember about Cwinds.
They may not have liked it, but they bought the mazes.