By David Delabassee-Oracle on Mar 14, 2017
We are in fact releasing 2 types of GlassFish 5 builds: nightly and promoted (for both the full Java EE platform and the Web Profile).
Given that Java EE 8 is based on Java SE 8+, we are using Java SE 8 as the baseline JDK for GlassFish 5 but the intent to also support Java SE 9 for the final GF5 release. For example, this week promoted build isn't working on Java SE 9 but that is only temporary.
The nightly builds will always be a few days ahead of the latest promoted build but we do encourage the community to use promoted builds. So you can help us by testing the latest promoted GF5 builds. If you find any issue, please raise a ticket against the appropriate GlassFish component here. And if you are confident that the issue is located in a specific component (e.g. Jersey) it might be more efficient to raise the issue directly against that particular component.
GlassFish 5 should be released about six weeks after the Java EE 8 Platform specification (JSR 366) is final. As of today, we are targeting specification completion in July, which would result on a release date in the August/September timeframe. The schedule is subject to change but that is our current direction.