JSR 353 is part of JavaEE 7 and until today mainly glassfish implementation was available (found also https://github.com/vvakame/jpp-jsr353-impl on github). Since Apache will need its implementation (TomEE and CXF for instance ;)) and since JSon is a very common need at Apache, creating an incubator project for it didn’t create a big debate.
The project is called Apache Fleece. It will provide an implementation of JSon processing specification of course but also a small Mapper (Java JSon) and two JAX-RS JSon providers (one for JSON Processing specification Objects and one for standard Java objects).
Project is not yet imported but it will be hopefully done in the coming days. Draft implementation can be found on my github at https://github.com/rmannibucau/json-impl.