JDeveloper/ADF 11g Release 2 (18.104.22.168.0 Build 6017) is Out
By Didier Laurent on Jun 07, 2011
You can download it from OTN.
There is a specific Certification and Support Matrix.
You can access the whole documentation [Here].
Important Note - This version of JDeveloper doesn't include the SOA and WebCenter pieces - to use these components you'll need to download Oracle JDeveloper 22.214.171.124.0.