●SLACK — Claude Tag rolls out to teams on Slack: tag @Claude into channels to delegate tasks and connect tools, data, and codebases●MODEL — The Opus class gets an upgrade, with stronger coding, agentic, and professional work plus consistency for long-running tasks●CODE — Claude Code adds dynamic workflows in research preview, letting Claude break complex work into steps on its own●CODE — The new ultracode setting raises effort to xhigh while letting Claude decide when to use a workflow●SECURITY — Anthropic says operators linked to Alibaba's Qwen lab tried to access Claude via thousands of fraudulent accounts●LINEUP — Opus 4.8, Sonnet 4.6, and Haiku 4.5 lead the lineup; pick the right one per task●SLACK — Claude Tag rolls out to teams on Slack: tag @Claude into channels to delegate tasks and connect tools, data, and codebases●MODEL — The Opus class gets an upgrade, with stronger coding, agentic, and professional work plus consistency for long-running tasks●CODE — Claude Code adds dynamic workflows in research preview, letting Claude break complex work into steps on its own●CODE — The new ultracode setting raises effort to xhigh while letting Claude decide when to use a workflow●SECURITY — Anthropic says operators linked to Alibaba's Qwen lab tried to access Claude via thousands of fraudulent accounts●LINEUP — Opus 4.8, Sonnet 4.6, and Haiku 4.5 lead the lineup; pick the right one per task