- February 12th, 2019, 4:04 pm#4914052We have ATC as a more current precedent. So as far back as I can remember, the first the cast to be mentioned was Melissa McCarthy circa December 12, 2014. Then on January 27, 2015, it was announced, she, Wiig, McKinnon, and Jones were in negotiations to sign on. Then on June 10, Hemsworth was reported and confirmed.
Now that January 27 date - could be a coincidence now - or you can argue the video was set to public on purpose by the agent or not but Sarah Abbott's audition video appeared on Vimeo on drum roll January 26, 2019. Feels like they could announce the primary cast any day now between now and Fan Fest. But if you take this filming date May 13 as true, we could narrow it down to between now and before May 13. We got an IDW announcement for a June series coming this Thursday, and given how Sony released the ATC teaser around February 13, 2016, Sony might also be planning a PR event for the cast, too, for Thursday. Kinda a confluence of coincidences since Jason was in GB2 and we got that Valentine's Day line from Peter in it.
Short answer, between now and next 3 months, imo. Only logical...