OP Labs released a message at X saying, Attention OP Stack Chain operators and users: We will be doing a governance-approved upgrade to the proof-of-failure incident response on April 1st. This will trigger a one-time invalidation of all pending withdrawal proofs created on L1. Please complete all pending withdrawals by April 1 to avoid creating new withdrawal certificates that cannot be executed in a timely manner. Failure to complete any pending withdrawals does not put any ETH or ERC-20 tokens at risk, but requires users to submit a second withdrawal proof transaction on L1.