There have been times when it seemed like X Window System would be with us forever, even though it's more than 40 years old, and the last true version was issued in 2012. But with great effort, some organizations and operating systems have moved on. Raspberry Pi has now joined the forward momentum, with its latest release of Raspberry Pi OS swapping in Wayland—and it's hoping the change is hardly noticeable.
You might want to wait a moment before upgrading, though.
Simon Long wrote on Raspberry Pi's blog that the organization started thinking about switching to Wayland about 10 years ago, though it was "nowhere near ready to use" back then. Over the last few years, the Pi team has done some things to prep a real switch: