Welcome to our forum!
There are currently no plans to completely replace the web version of Teams.
The new Teams for Web is reimagined from the ground up with performance in mind, providing a faster, simpler, and more flexible experience. The new Teams client installs and loads faster, letting you launch the app and join meetings more quickly, giving you more time to focus on the business tasks.
Teams for Web users that haven’t updated to new Teams experience will be automatically updated following the same timelines as native clients listed in End of availability for classic Teams client.
For more details, you can refer to: New Teams for Web - Overview and prerequisites.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.