Nothing is final, and this is based on information discussed an provided on these pages:
May 28, 2024 - The Public Relations Department
May 28, 2024 - Office of the Fiscal Policy
May 28, 2024 - Economic Planning Department
May 28, 2024 - Thailand DWR
May 30, 2024 - Ministry of Foreign Affairs
May 31, 2024 - Thai Government Public Relations Department
June 20, 2024 - Department of Consular Affairs, Ministry of Foreign Affairs
Aug 24, 2024 - Ministry of Foreign Affairs
If you're traveling soon, there's no need to worry. It appears to be delayed yet again, and implementing something like this will take time. There will be plenty of information available, and it will also be communicated through the IATA Timatic system otherwise airlines will have trouble following any new requirements (very similar to how the Thailand Pass system was rolled out across airlines).
But also note that most of the mentioned requirements you quoted are already required to enter Thailand in many cases.
We created that website because we frequently receive inquiries about the ETA. Having a single point of reference makes it easier for everyone to stay informed on the topic, reducing the need for people to repeatedly contact our team for updates.
If an official government-operated page existed for this topic, we would have linked to it. However, as of now, the information available is limited to a collection of meetings and proposals. Unfortunately, the topic is also surrounded by scaremongering and news articles that often lack the helpful clarity needed.