Gemini 3.5 Flash-Lite, from July 21, is the newest Flash-Lite in Google's own posts
Google's blog post dated July 21, 2026 introduced Gemini 3.6 Flash, 3.5 Flash-Lite and 3.5 Flash Cyber together. It described 3.5 Flash-Lite as its fastest, most cost-effective 3.5-class model. That is below the 3.6 threshold, so it does not count as a qualifying release.