Oracle no longer posts updates of Java SE 6 and JRockit to its public download sites.
If you have a support contract you can download new updates from MOS.
You can locate the Java SE 6 downloads in this note “All Java SE Downloads on MOS (Doc ID 1439822.1)”.
JRockit downloads can be found via the Product or Family search under the “Patches & Updates” tab.
Is bit funky since you can select downloads that has not been released yet, for example 28.2.9 🙂
Alternatively you can use the quarterly CPU/SE CPU advisories to locate the patch id’s of the latest updates.Google+