MCP Release 2026-07-28: What Changes, What Breaks, and What You Need to Do About It

Mateo Torres walks through the largest change to MCP since launch: the removed session handshake, servers as formal OAuth 2.1 resource servers, first-class extensions, and the deprecation of Sampling and Roots — plus which changes are urgent, which you can stage, and the tactical and strategic shifts your team needs to make.