Well, we always release an ISO when upstream releases one.
However today is different: this 7.3.1707 ISO is based on the upstream 7.3.1611. It is an "intermediate" ISO. Thus we didn't increase the nethserver-release version. Once installed it is still numbered 7.3.1611, as the upstream one.
This new ISO has updates to NethServer packages only. I think that some improvements (Accounts provider page, diagnostic tools) are important, especially for people that install NethServer for the first time (~1000 downloads per week, according to SF). To be useful they must be available immediately after installation.
I don't agree. Testing upstream ISO is different from testing NethServer features. When CentOS releases a new ISO, we must
- read carefully release notes and see what has been changed
- test for specific changes, but almost test everything
Testing this ISO means:
Test the expected new features are available upon installation, period. New features has been already tested individually during the QA phase, before being released.