The dates and more has been announced for Meeting C++ 2022:

Announcing Meeting C++ 2022

by Jens Weller

From the article:

Meeting C++ 2022 (17th - 19th November) will be a hybrid event, returning to Berlin while also being an online event for all that can't make it to the Andels in Berlin.

After two years, this years conference will be the first hosted on site again. For 3 days Meeting C++ will offer the best of C++ in talks and 3 keynotes. Keynotes will be announced later, there is a long list of folks I'd like to keynote, but I haven't decided on this at the moment...