I'm trying to get a beta in people's hands in early November. This will be available on PyPI, but you will need to manually install a pre-release version of west with 'pip3 install --pre west' or so to get it. It's not in 0.6.3.
I want to give it some "soak time" this way before we release an official version of west with this feature, because it will be harder to make big changes based on user feedback after that release happens.
I will send mail to the lists with details at that time.