Back to trendsClaude Opus 4.8 (fast mode) is now in preview for GitHub CopilotSource-linked topic cluster with 1 signals across related articles, projects, models, papers, and source updates.RDR54SignalsMomentum 73Last seen Jun 29, 2026Source mixHTML:github-copilot-changelog (1)SignalsClaude Opus 4.8 (fast mode) is now in preview for GitHub CopilotGitHub Copilot Changelog - github.blog