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Copilot in Excel introduces new finance-focused capabilities that help teams work to their standards, use trusted financial data, and stay in control of every change. GPT‑5.5 Instant is now available ...

2026-07-04 🧹 UTC timestamp cleanup for session and API paths: tightened the #395 timestamp fix so session, goal, channel, and API timestamps now emit timezone-aware UTC values in explicit ISO form.