Anthropic 'Claude Code' update: sub-agents, LSP hooks, and Claude Ultra model

A recent video reports that Anthropic updated 'Claude Code' with sub-agents for decomposing tasks, integration with Language Server Protocols (LSPs), and a new 'Claude Ultra' coding model. The video does not show official docs, so treat details as preliminary. If accurate, these features aim to improve code navigation and task automation across large repos and multi-language backends.