Gemini 2.0 Pro
I found this in the "Spatial Understanding" app, inside "Starter apps"
EDIT: Also, gemini 2.0 Flash is no longer marked as experimental
EDIT 2: It seems like all the requests from the yet unreleased models are being sent to gemini-2.0-flash-exp, as shown here. But we still got to see what models google is working on.