The original post was was confused by some changes to pom files made just before the issue was discovered. See #8502 (comment) for likely indicator that maven central is stuck. Apache NetBeans version ...

The Apache Software Foundation has released a release candidate of its NetBeans Version 9.0 IDE, with support for the Java Module System introduced with Java 9 last year. Modules comprised the ...

The Apache Software Foundation announced the beta release of the still incubating version of Apache NetBeans 9.0.