New installs, read the Arch news.
 

Change from base group to a base package.

https://www.archlinux.org/news/base-...tion-required/

https://www.google.com/search?q=site..._rd=ssl&num=20

That's pretty ugly. I find I have quite a use for a kernel. Better go fire up that Arch build I haven't looked at in a while.

Nothing ugly; on a working arch install, it's business as usual, I even use a wrapper around pacman that shows me the news.
Do what it says, life goes on.
Not sure what they meant by "You will have to install these separately on new installations", but I'm sure it's normal, too. ArchLinux tends to give you the information plain & unambiguous, regardless of how "ugly" it sounds.

The wiki Installation_guide shows how to do it.
https://wiki.archlinux.org/index.php/Installation_guide
https://wiki.archlinux.org/index.php...e_base_package
https://www.archlinux.org/todo/base-group-removal/
https://bbs.archlinux.org/viewtopic.php?id=249773
https://bbs.archlinux.org/viewtopic.php?id=249933