Having had our application stop working when customers installed the 7u45 update, we're wondering what more we can do in the future to be ready for these updates up-front and avoid release-day support nightmares.
(Per the Java version numbering scheme, the next Critical Patch Update, planned for January 14, will be 7u51. The next Limited Update (date unknown) will be 7u60.)
I've poked around the Oracle and OpenJDK websites, and not found anything particularly useful. The main Oracle page for Java SE has an Early Access Downloads section. It has three links that have potential, but don't pan out:
https://jdk7.java.net/, which still talks about 7u40 -- no mention of 7u45, let alone 7u51 or 7u60.
http://openjdk.java.net/projects/jdk7u/, which says "We're open for fixes for 7u60 in the jdk7u-dev forest", but doesn't appear to provide any pre-built binaries. It's also not clear to me whether the deployment components (applet plug-in and webstart), the main source of our past compatibility issues, are even part of OpenJDK to begin with.
The Java Compatibility and Performance Program sounds like just what I want, but nobody knows how to sign up for it.
An answer to the second question I linked above points to an OpenJDK bug report that was filed back in August. (It has a "CAP" label, which might stand for "Compatibility and Performance"?) So clearly some people are able to test their applications against these updates. Any pointers on how to join that club are much appreciated!