FTX released updated notes on Ethereum merger. FTX will suspend the deposit and withdrawal of native ETH and ERC-20 tokens about half an hour before the Bellatrix consensus layer upgrade (Beacon Chain epoch 144896: September 06, 2022 11:34:47 UTC) and the Paris execution layer upgrade.
Spot trading, spot leveraged trading and futures trading of ETH and ERC-20 tokens will not be affected. After the merger, one or more PoW ETH forks may occur.
In the event of a typical PoW ETH fork, FTX will distribute the forked PoW ETH and credit the user account. Users who borrowed ETH will be charged the forked PoW ETH based on their ETH balance at the time of the fork snapshot, which will be taken before the Paris implementation layer upgrade.
FTX reserves the right to modify the handling of any PoW ETH fork at any time. After the merger, the ETH code will be used to use the ETH PoS chain.