Thank you for your patience. We are thrilled to that replying to a chat message in the desktop client is now available as part of our Public Preview. It is expected to roll out to the public ring over the next several weeks.
For details on switching to the Microsoft Teams Public Preview version, please see : https://aka.ms/TeamsPublicPreview.
We look forward to your preview feedback!
An error occurred while saving the commentDebbie Gates commented
This is a very good start, but it's missing a critical component... the quoted text should be linked back to its original location in the chat. As is, it at least gives you a date reference, but you're still stuck with a lot of scrolling to get back to the location if the message that was quoted is weeks or months old. (Teams on MacOS, if that makes a difference.)