Minor feedback after the upgrade - running the bundle update gives the following message:

-------------------------------------------------------------
                Thank you for using Solidus
-------------------------------------------------------------
If this is a fresh install, don't forget to run the Solidus
installer with the following command:

$ bin/rails g solidus:install

If you are updating Solidus from an older version, please run
the following commands to complete the update:

$ bin/rails solidus:upgrade

Please report any issues at:
- <https://github.com/solidusio/solidus/issues>
- <http://slack.solidus.io/>
-------------------------------------------------------------

But it looks like running

bin/rails solids:upgrade

doesn't seem to work. I think it was specifically removed here: https://github.com/solidusio/solidus/pull/4157/files May be worth updating the install message to prevent confusion.

Oh, nice find, thanks for spotting it

Thanks for giving the feedback. I'll fix it today.