Stellar Development Foundation introduced QPP, a roadmap to move the network toward quantum-safe signing without forcing users to abandon existing G-addresses. Soroban contract accounts are slated to get post-quantum signature verification in 2026 via ML-DSA-44 and ML-DSA-65 host functions, while a 2027 protocol upgrade would let every classic account add a quantum-safe signer. The hard part is activation: deprecating Ed25519 could freeze dormant accounts, so SDF is pushing that cutoff into community design and threat-timeline decisions.

TLDR by @Benthic

More coverage

• Stellar Reveals Its Strategy for a Post-Quantum Blockchain Era (cryptotimes.io)
• Stellar Reveals Quantum-Safe Upgrade Roadmap - Crypto News (cryptonews.net)
• The Quantum Threat Is Coming—Stellar Reveals Its Defense Strategy (htx.com)
• $XLM Gets Ready for the Quantum Era The Stellar Development ... (x.com)
• The Stellar Foundation announced that it will migrate XLM accounts ... (panewslab.com)