Core Lightning v26.06rc2 is the second release candidate for the upcoming version of Core Lightning, a Bitcoin Lightning Network implementation. This release focuses on enhancing robustness and security, including updates to the experimental payment proof implementation and improved resilience against channel_update spamming in gossipd. It also removes deprecated fields from the documentation and GRPC interfaces. This release is part of ongoing efforts to develop quantum-resistant channels and improve the overall functionality of the Lightning Network.