As reported in a memo to Cast Members, Disney has officially announced the closure of two attractions and a night-time light spectacular.

Disney didn’t offer a reason for the decision yet; the most surprising of the closures is the permanent closure of Rivers of Light, the night-time spectacular at Disney’s Animal Kingdom. Along with this are the permanent closures of Primeval Whirl and Stitch’s Great Escape.

Stitch’s Great Escape
Stitch’s Great Escape! opened in Tomorrowland at the Magic Kingdom back in 2004.  Based on the 2002 film Lilo & Stitch, the attraction was a less scary replacement for the ExtraTERRORestrial Alien Encounter.
Disney debuted Rivers of Light back in 2017. Like EPCOT’s Illuminations, it did not rely on Disney characters and intellectual property

In 2019, Disney announced that it would add Disney characters to an updated copy of the show, called Rivers of Light: We Are One.

Primeval Whirl
Primeval Whirl initially closed for maintenance issues late in 2019 but moved from a refurbishment status to a seasonal situation.

At this time, Disney has released no information on what will replace these attractions.