MC554158 — A new experience to search within chat and channels.

Microsoft 365 is introducing a new and improved experience to search within chats and channels. The update includes enhancements such as a new in-chat and in-channel search experience, keyword highlighting, and pop-out chat search. The rollout will begin in mid-October 2023 and is expected to be completed by late November 2023 for most users. Some users may experience a later rollout completion date. No preparation is needed as the new search experience is set up by default.