The Polygon zkEVM mainnet will not issue a separate token and will use ETH to pay for gas fees

ChainCatcher message, Polygon stated in the general FAQ document related to zkEVM that the Polygon zkEVM mainnet will not issue a separate token, and ETH will be used to pay for network gas fees. It is expected that in the future, MATIC will be used for staking and governance in Polygon zkEVM. Additionally, since Polygon zkEVM supports account abstraction through ERC-4337, this will allow users to pay fees using any token. (source link)