https://timesnewsnetwork.com/news/technology/sources-microsoft-has-started-testing-a-major-new-teams-version-that-uses-50-less-memory-and-taxes-the-cpu-less-and-plans-to-release-a-preview-in-march-2023-tom-warren-the-verge/
Sources: Microsoft has started testing a major new Teams version that uses 50% less memory and taxes the CPU less, and plans to release a preview in March 2023 (Tom Warren/The Verge)