I’m happy to wait for the official release, although trying to get a local server running looks like fun, but at this time of year I don’t really have the time.
The latest Heroku email talks about their Eco Dynos plan, 1000 hours a month shared across all your dynos for $5 a month. My stats say 12 hours used so far this month, so that should easily cover my usage for the time being 
