Telltale Games posted this 55-minute video of their panel presentation.

Announced by Propstore.

https://twitter.com/propstore_com/status/1682454289057484800

https://twitter.com/TheExpanseVerse/status/1682454187139911701

(Disclaimer: I have no affiliation.)

At SDCC today (July 21st), Telltale Games hosted a panel discussion about the upcoming prequel game series that they're developing with Deck Nine.

I wasn't there, but I noticed two fans' tweets reporting that Telltale announced that the Avasarala character will appear (in DLC, one said).

https://twitter.com/Urquwill/status/1682452520633880580

Hearing that @telltalegames announced at SDCC that Avasarala will be in the expanse video game!!! ...

https://twitter.com/takeshikitano3/status/1682448129860460544

... we're getting dlc with @SAghdashloo ...