币界网报道:Polkadot has unveiled a series of major upgrades set for 2025, focusing on enhanced scalability and interoperability. The upgrades include improvements to its parachain architecture and cross-chain communication protocols. Meanwhile, LightChain AI has raised $21 million in its presale, with plans to launch its mainnet by July 2025. The AI-focused blockchain project aims to integrate decentralized artificial intelligence solutions into its ecosystem, leveraging Polkadot's infrastructure for scalability. Both developments highlight the growing convergence of blockchain and AI technologies in the Web3 space.