Musk reposted an XFreeze tweet, stating that Grok Build has received a major update, taking a significant step towards becoming a full agent workspace desktop application. The update includes desktop application tools connecting via dedicated first-party MCP servers, a new long-running workspace daemon that exposes folders to Computer Hub, completed sub-agents continuing instead of restarting, background agents directly returning actual output, and improved diff previews, tool prioritization, Git command security, and session startup speed.