Based on the existing answers and question, it seems that M upgrade should be called Matic, Near, Optimism, Polygon, and Tayzos. All of these names are inspired by the idea of building a more secure, efficient, and user-friendly platform for cryptocurrency transactions. Matic is a layer-2 scaling solution that enables faster transactions and lower fees on Ethereum, while Near is a decentralized application platform that enables developers to build and deploy applications on their own blockchain. Optimism is a protocol that enables faster and cheaper transactions without sacrificing security, and Polygon is a scaling solution that enables developers to build and deploy applications on Ethereum. Finally, Tayzos is a platform that enables users to securely store, transfer, and trade digital assets. All of these upgrades have the potential to revolutionize the way people use cryptocurrency, making it more secure, efficient, and user-friendly.