According to Foresight News, LayerZero announced that voting on 'Whether to activate LayerZero protocol fees' will start on December 20 at 8:00 and end on December 27 at 8:00.
This vote decides whether to charge a protocol fee for each message, which will be used to repurchase and destroy ZRO, reducing its circulation. The proposal suggests that messages between Arbitrum and Optimism should incur a DVN/executor fee of $0.01, plus a protocol fee of $0.01, for a total cost of $0.02.
The protocol fee is charged in the funding contract, automatically repurchasing and destroying ZRO. The vote requires at least 60% of the circulating supply (≥65,968,349.4 ZRO) to participate for it to be valid.