Hi,
There's three separate elements here:
- Web server (where the actual clients get content)
- Dispatcher (the module in the web server which proxies requests to AEM)
- AEM's HTTP stack.
#1 is available today using mod_h2: https://github.com/icing/mod_h2 and will be in the next release of Apache HTTPD. This is also the most relevant issue.
#2 is dependent upon #3 as there's no point in the Dispatcher supporting HTTP/2 until it has something to access.
#3 requires an update to the Felix HTTP Jetty bundle. I created https://issues.apache.org/jira/browse/FELIX-5002 to track this if you want to watch that issue.
If #2 and #3 are important to you, I'd suggest filing a DayCare issue so this can be properly prioritized.
Regards,
Justin