I definitely wish you guys had advertised that earlier / better. I feel like I got lucky because I put off migrating until just before the sunset, at which point I discovered eco dynos. I swear they either didn't exist or were harder to find when the sunset was first announced. Thanks for making them available at all, though.

(Context: I maintain an app for an event that runs about one week a year. The ability to use free dynos the other 51 weeks means we retain the ability to do one-off analytics queries, minor development work, etc. during the off-season, without having to delete and recreate the app or something every year. Eco isn't quite as good as free, but it means we can still have separate staging and production instances during the off-season, without paying extra for staging to be idle, and without having to destroy and recreate staging every year.)