As of yesterday, the JDeveloper 10.1.3.3 release is available for download on OTN: http://www.oracle.com/technology/software/products/jdev/htdocs/soft10133.html. Apparently, this release is only a patch release with bugfixes (see http://www.oracle.com/technology/products/jdev/htdocs/10.1.3.3/fixlist.htm for an overview of the fixes in this release) and no new functionality. There is no new documentation set (http://www.oracle.com/technology/documentation/jdev.html ).
One fairly interesting bug that was fixed: 5682799 NO WAY TO GENERATE DIFFERENT TREE ICONS. I have yet to check out how it was fixed, but I have ran into it in the past. There is also a number of fixes in the BPEL and ESB Design Time.
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