Say I decide to add a new module to an installation profile I've created and used to build a bunch of sites with. Can I easily use Drush to update all of those sites to the latest version of the Installation Profile?
I've just recently started to grok installation profiles, but I'm not sure if they are useful after a site has been set up. I manage 40+ sites at work, so this would be amazing if possible.
TIA.
Aaron