Cardano’s Leios Scaling Work Advances, but November Update Signals No Mainnet Launch

TL;DR: Cardano’s November 6 development report describes progress on the Leios scaling design, including endorser-block production, chain-selection checks and a new prototype. The work remains in development. It is not a mainnet deployment or proof that Cardano has already delivered the throughput improvements under discussion. Blockchain scaling announcements can make incremental engineering sound like an overnight transformation. Cardano’s latest weekly report is more useful when read for what the teams actually changed: pieces of consensus code, prototype behaviour and supporting developer tools. The November 6 Cardano development update says the consensus team advanced Leios on its main development branch, with work on endorser-block production, certificate checks during chain selection and relaying votes. The report explicitly identifies these as development activities rather than an upgrade already running on the public network. What moved forward in Leios Leios is intended to explore greater processing capacity without discarding the chain’s consensus and security assumptions. One challenge is getting participants to agree on which blocks and endorsements are valid while kee...