Google I/O 2026 was the first keynote in three years where I came out with a different product roadmap than the one I brought in. Not because the demos were impressive. Because three announcements have direct implications for product decisions I've been putting off — including specific decisions about my React Native stack. Firebase Hybrid Inference. Gemini Nano in ML Kit. Gemini Spark as a consumer agent. These change what mobile apps (including RN apps) need to do to stay competitive in the next 12 to 18 months. Here is what mattered, filtered for mobile builders. There's a React Native-specific section at the bottom with concrete package paths. Is your app's AI running in the right place? Firebase AI Logic now supports the full Gemini 3.x family. The more important announcement: Hybrid Inference for Android and iOS. Your app decides at runtime whether a given AI task runs locally on the device via Gemini Nano or falls back to the cloud, based on network conditions, device capability, and cost.…