Oracle: “Opening Up Java EE”
blogs.oracle.com
blogs.oracle.com
Some Java EE specs are already at Eclipse (long standing historical reasons), so there is a small precedent
Apache already has their own implementation of much of Java EE (via the Geronimo project, TomEE and Tomcat, among others).
In my opinion it would be slightly confusing to have say 2 JSF implementations at Apache (Myfaces and Mojarra). Not really terrible, but my gut feeling says Eclipse would be a better home.
licensing: MIT
Java EE is somewhat different from .NET in that it involves multiple vendors cooperating.