Animorph audiobooks are available for preorder

https://www.audible.com/series/Animorphs-Series-Audiobooks/B07ZH2ZD17

Based on the information released so far, it seems like it will be two books each month, starting in January.

• January 7th 2020 - The Invasion & The Visitor

• February 5th 2020 - The Encounter & The Message

• March 3rd 2020 - The Predator & The Capture (not listed yet)

• April 8th 2020 - The Stranger & The Alien

Only the first three books have time stamps listed, 3:47, 3:37, and 3:05, respectively.

There will be a different narrator for each character's books, but each audiobook will only have one narrator. i.e. The Jake actor will not be doing the Jake dialogue in non-Jake books. (Confirmed via twitter).

All of the actors have voice samples available online:

Jake / MacLeod Andrews: audible, website

Rachel / Emily Ellet: audible, website

Tobias / Michael Crouch: audible, website

Casie / Sisi Aisha Johnson: audible

Marco / Ramón de Ocampo: audible, website

Ax / Adam Verner: audible, website

There's no information about how stuff like Chronicles and Megamorphs will work.