Copilot CLI 1.0.85 ships Vim mode to everyone and opt-in context management for subagents.

Published September 16, it turns on modal editing via /vim, adds /settings options to opt into context management tools for agents and subagents, adds transcriptView: "concise" grouping tool activity into expandable summaries, and adds GPT-6 Astra support. The subagent toggle is opt-in, so existing installs don't get it. The same release adds per-host sandbox network allow/deny rules that layer on top of a configured upstream proxy rather than replacing it, and fixes a Windows bypass where a policy-blocked write forced you to disable the sandbox for the whole session.