Issue
I would like to know about Heroku's HTTP/2 support.
Resolution
HTTP/2 is generally available for all common runtime customers and even Private Spaces customers too.
More details on HTTP/2 are posted in our blog.
You can find out about all our currently supported HTTP protocols here: https://devcenter.heroku.com/articles/http-routing#http-versions-supported
For any future developments we recommend subscribing to the Heroku Changelog. This will let you know about updates, improvements and deprecations ahead of time so that you can make any necessary adjustments.