Currently we need to release a new version of the cli in order to 'show' we have a new version available.
The list is here: https://repo.backbase.com/webapp/search/artifact/?2&q=launchpad-archetype-CXP5.6
We'd need to check on bb generate project for the latest version.
I think we have already something like this provided by @mistermark that can do it. Please ask him where to find it