Stellar has emerged as a focal point for enterprise blockchain adoption and post-quantum cryptography preparedness, with major announcements spanning protocol security, institutional partnerships, and ecosystem expansion over the past 24-48 hours. The Stellar Development Foundation published its Quantum Preparedness Plan on June 9, 2026, outlining a three-stage roadmap to transition the network toward post-quantum cryptography. The initiative represents a proactive approach to quantum computing risks, with concrete timelines: post-quantum signature verification will be added to Soroban in 2026, followed by a native protocol upgrade by the end of 2027 that will allow every Stellar account to add a quantum-safe signer while preserving existing addresses and transaction history.