A Microsoft Copilot Studio community thread produced a concrete model-availability update: Microsoft staff said GPT Chat Latest (identified in the replies as GPT-5.6 Chat) was recently added to Standard Agents and is expected to become the default for new agents worldwide soon. This is a community-reported Microsoft staff statement rather than a published changelog; rollout timing and availability for existing agents remain unclear. Source: https://www.reddit.com/r/copilotstudio/comments/1wo2nrn/copilot_studio_model_updates_standard_agent/
A high-engagement Hacker News debate (334 points, 330 comments at scan time) crystallized a practical agent-infrastructure tradeoff: a new essay argues capable terminal agents can replace many MCP wrappers with direct API/CLI calls and simpler content negotiation, while practitioners defended MCP for scoped credentials, access control, audit logs, discoverability, and stateful integrations. The discussion is useful as a design signal, not evidence that MCP is obsolete; the security distinction between raw shell/API access and mediated tools is central. Sources: https://maharship.com/blog/why-mcp-was-always-a-bad-idea/ ; https://news.ycombinator.com/item?id=49779329