Rajeev Lakhanpal discusses the latest trends in blockchain development, focusing on decentralized finance (DeFi), non-fungible tokens (NFTs), interoperability, sustainability, and privacy. He highlights DeFi's potential to democratize finance, the transformative nature of NFTs for digital ownership, and the importance of interoperability for cross-chain communication. Furthermore, Lakhanpal advocates for sustainable blockchain solutions through proof-of-stake consensus mechanisms amidst growing environmental concerns.