She didn't provide any information as to when a preview or final version of that Linux client will be available. I've asked but no word back yet. Update: A spokesperson said the company had nothing to say about timing and pointed to the updated UserVoice post saying "stay tuned for more information."
Microsoft already offers Teams for Windows, Mac, iOS, Android and the Web. Microsoft group-chat rival Slack already has a Linux client.
The original UserVoice request for a Linux client for Teams dates back to 2016. Teams for Linux is one of the top user requests on the Teams UserVoice site.
Microsoft's Teams client is an Electron app. Many accuse it of being bloated, slow and in need of a do-over (especially on Windows). I, myself, have not had good luck getting the Teams web client to work consistently on Windows 7. Here's hoping the Teams team also is working on its existing products, not just brand-new ones.