Oracle recently came out with JDeveloper 11gR2 (11.1.2.x), and not everyone was impressed. See for example the discussion “Performance and stability of JDeveloper 11gR2 vs. 11gR1” in the ADF Enterprise Methodology Group.
If you look up JDeveloper 11gR2 in the Oracle Lifetime Support Policy document, on page 9 you will find that 11gR2 does not get the normal 5 years of premier support and 3 years of extended support. Instead, you have only 3 years of premier support, ending June 2014. In effect, Oracle does not consider JDeveloper 11gR2 a real release and will only support it as long as they support 11gR1.
Finally, if you look at the section “Bugs Fixed in 18.104.22.168.0” in “Oracle JDeveloper and Oracle ADF 11g Release 2 (11.1.2.x) New Features”, you see a lot of bugs where the subject start with “backport”. Backporting means to take a bug fix from a newer release and apply it to an older one. So the fact that the very latest JDeveloper release comes with backports right from the start indicates that Oracle is considering 11gR2 the “old” release.
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