In prior projects (before the gallery started acting more like a management console (still would like to see a few more features there too ;) ) , we were able to automate the deployment of the workflows. But there's no good way to automate the deployment of the schedules.
The best I've heard is doing a complete dump of the mongo instance on the lower environment and moving that file and ultimately restoring that to the prod environment (messy).
Even using the Gallery, there will still need to be an admin who goes through the process of setting up schedules to deployed apps.
There should be a REST call to export and import schedules of apps from one environment to the next within the gallery.
Best,
dK