AMENDMENT Clients as good as you'd expect

We will cover the major news in this years client development. In particular we'll talk about:

Fast clients rely on sliding sync, used in the
matrix-rust-sdk, which is the foundation for all next gen element clients, including
Element X, the next Element client with a decluttered experience and fancy features like
WYSIWYG

This talk was moved from 09:30 to 09:55 after the talk "Load Testing Matrix Homeservers" was cancelled.