Who is preventing the release of Java 1.7?

I recently attended a talk by a Sun engineer, Charlie Hunt, regarding performance. The talk was interesting enough but one question was regarding the release date of 1.7.

Java 7 diamond operator: why was it difficult to implement?

I watched the Oracle OTN Virtual Event: Java SE and JavaFX 2.0 (28 Feb 2012) and while talking about the new diamond operator (that Map<String, List<String>> myMap = new HashMap<>(); thing) the speaker mentioned that it was not as simpleto implement than one might think, as it is not a simple token replacement.

Use content assist with Explicit type argument in Java compliance level 1.7

I'm using Eclipse 3.7 under Java 7, so I want to keep my compiler compliance level in 1.7.