At Google I/O yesterday, the company deployed what it called the biggest Search upgrade in a quarter century — an AI-powered Search box that anticipates intent, accepts images, video, and Chrome tabs, and integrates your personal Gmail and Photos data. We break down the full I/O recap: Gemini 3.5 Flash, the new AI Ultra tier, Gemini Spark as a 24/7 agent, fashion-forward AI glasses with Warby Parker and Gentle Monster, and why OpenAI joining Google's SynthID watermarking standard is quietly significant.