The Demand Gen FAQ has been updated to reflect a significant change in billing for Google Display Ads. Previously, Google Display Network (GDN) image inventory was billed on a CPC basis, but it has now shifted to a CPM model. This adjustment coincides with the removal of the separate Google Video Platform row.
The update consolidates the billing under a single entry for Google Display Ads (GDN): CPM. Alongside this change, a previous note regarding the anticipated update timeline to 2024 has been removed.

Read the official help page here: Demand Gen Frequently Asked Questions (FAQ).
This update was spotted by Hana Kobzová.