Emacs 30.1 RC1 is available

The first release candidate for Emacs 30.1, the extensible text editor, is now available at:

https://alpha.gnu.org/gnu/emacs/pretest/emacs-30.1-rc1.tar.xz

Please give it as much testing as you can. If no problems are reported, this will become Emacs 30.1 this Sunday.