MS公式ブログとBingブログでCopilot新機能の紹介

Celebrating the first year of Copilot with significant new innovations
https://blogs.microsoft.com/blog/2023/12/05/celebrating-the-first-year-of-copilot-with-significant-new-innovations/

Continued AI Innovation in Copilot
https://blogs.bing.com/search-quality-insights/december-2023/Continued-AI-Innovation-in-Copilot