The Ethereum Foundation issued a document saying that the parameters of the mainnet merger were agreed in the community conference call, but TTD is based on the difficulty of proof of work, so it is difficult to accurately estimate, the target date is September 15, 2022, but this estimate is even There may be a one-week error.
On the next core developer conference call on August 18, final adjustments will be made to confirm the TTD or make final adjustments to better meet the target date.
In addition, important events include the EL and CL teams cutting the mainnet software version on August 18. Final parameters and client resources released on August 23. Bellatrix mainnet upgrade on September 6th.