I'm as pessimistic as I've ever been about another album happening.
I think real long term planning is potentially out the window now. They've said that they have plans up until 2026, which brings us to the end of this tour. If they're looking to go out in 2027 then planning for that would likely begin sometime next year, but Nicko's health is obviously a big concern. I think if he decides to step down then I suspect some members won't want to go on without him, and that would basically cause the band to wrap things up.
I know Steve has mentioned still doing albums after the end of the touring life of the band, but I just don't see it happening. Without a tour to support it they'd be essentially burning money to create a product that generates no income. Maiden is a business and brand as much as it's a band these days.