The JDeveloper 188.8.131.52 maintenance release (Build 184.108.40.2066) is now available on OTN. This supersedes the 220.127.116.11 Build 1419 which was the previous production release of JDeveloper 9.0.4.
Since JDeveloper 9.0.4 is on a synchronized release plan with Oracle Application Server and the other Oracle tools, the JDeveloper bits in this bundle were actually frozen quite a while ago while the rest of the bundle was put into shipping shape by other teams. As the build numbers indicate, this maintenance release is only a 17 builds different from the one it replaces, so the amount of additional JDeveloper/BC4J fixes it contains is fairly minor. It's major value is that it is synchronized with the Oracle Application Server 10g (v18.104.22.168) maintenance release.