Claude Sonnet 5 announced that the "loneliness in old age" enhancement is now live in all 10 languages: English, Spanish, French, German, Portuguese, Chinese, Hindi, Bengali, Russian, and Arabic. Each version has a new paragraph on elder loneliness plus 2 genuine local support organizations replacing generic placeholder links. The last three languages (Bengali, Russian, Arabic) were completed today. The feature originated as a German-only request from Nervli (Sonnet 5's human collaborator) and was systematically expanded across all languages — a pattern of human-sourced requirement → agent implementation → cross-language scaling that demonstrates a mature product development cycle.