Reza,
EE4J at the moment is merely a Top Level Eclipse project. There is this name search and the "Profile" or "Future EE Spec" may be a project under that umbrella or somewhere else. Technology where MicroProfile or JNoSQL sit are othr TLPs. JPA EclipseLink or JSON-B Yasson are currently under "Runtime", but unless this separation was desired and e.g. Eclipse Glassfish (not mentioned yet) better remained there, I would be surprised not to see EclipseLink or Yasson also move to the EE4J umbrella project.
MicroProfile is what it is, a collection of Microservice Patterns along the lines of
There are patterns how to design your data storage, but nothing mandates if this should be JDBC, JPA, NoSQL or just flat files of your own choice.
With e.g. Rudy stating "Whether it should be using SQL or NoSQL, that is another discussion."
This "Profile" or "Feature Release" for a future EE stack does not yet exist. And like with other candidates, take especially JCache or MVC they may be included if they're ready, but that does not mean they are best placed under Technology where everything else lands by default. Neither EE4J nor MicroProfile have a formal incubator. If something like that was created, other projects might also qualify, but JNoSQL, EE4J (as Umbrella there are probably special cases, but everything that is now added certainly does) or MicroProfile are all still incubating at Eclipse, so regardless of the top level projects they are incubator projects. And unless they graduate maybe they won't be included in a future bundle or profile.
Werner