Is there an upgrade Guide for Phoenix 1.8?

Upgrading a LiveView-using Phoenix 1.7 app to Phoenix 1.8, I found this information on using the simplified layout setup helpful.

After faithfully enacting the changes found at PhoenixDiff, I needed to wrap each LiveView HEEx template with:

<Layouts.app flash={@flash} current_user={@current_user}>
  ...
</Layouts.app>

And in MyAppWeb.Layouts:

  attr :current_user, :map, default: nil  # added
  slot :inner_block, required: true
  def app(assigns) do
    ...
  end

(Using @current_user because 1.8’s scopes are not yet configured/in use in my 1.7-initiated app. I’ll see about switching to scopes next.)