There will be teams that are starting games today - that might look at ways of using it. I Know of some teams using it for art pipelines (but mostly inspiration / mood boards). And there will be some tools like Photoshop and Blender etc that will mean we will see it appear in the pipelines earlier.

But as far as wide spread penetration - it will probably need to wait for teams to start new projects. So obviously, a team starting today may choose to do something already. But widespread use? It's way too risky. It's hard enough to justify an upgrade from UE4.27 to UE5.1. I can't imagine up-ending an entire gameplay system just to integrate AI would be an easy sell.

And while I won't be the first to know when it starts happening... I will be early on because of where I sit in the pipeline. All I hear right now is crickets.