A new version of JDeveloper is now available.
Oracle has released a new version of JDeveloper, 184.108.40.206, with a whole bunch of new features, including Maven support, and a lot of performance enhancements. You can check out details of the new features here.
Please note that this version does not support WebCenter, SOA and BPM development. You should continue to use 11.1.1.x for that kind of development.