I just downloaded Core 141, and all seems to have gone well. DNS was migrated to the new setup page, and all seems to be working after some basic testing.
However, I do not see rfkill. There is a new file /dev/rfkill, but I receive a "Permission Denied" error when I try to execute it. Adding execute privileges does not help.
Also, I wonder if we should add a note "DNS is configured in the Web Interface" or similar to the setup program for anyone who is used to configuring that in Setup and who did not get the message.
Tom