in helios-solo.rb [19:31]
def caveats; <<~EOS
This formula installs the latest version of the helios-solo tools,
but it doesn't upgrade the Helios image. If you have upgraded from
an older version of helios-solo, switch to the latest image by
running:
helios-use latest
You can run `helios-use` to switch to any available Helios version
whenever you'd like, even without upgrading helios-solo.
EOS
end