Starting with the release of Java SE 7 Update 71 (Java SE 7u71) in This is the official Oracle's answer: Java CPU and PSU Releases Explained Oracle is certainly not obligated to split their updates in this fashion, but I'm sure some of their most risk-averse customers are glad to have the option. Thus the changes in 8u66 are optional (note that the baseline linked above is still 1.8.0_65, and companies that want more stability in their platform might well prefer to only apply the security fixes, which are necessary. However, even bug fixes can sometimes cause changes to behaviour that present compatibility issues for users. 8u66 has those same security updates, plus additional bug fixes. Impacted by one of the additional bugs fixed in that version as noted inĨu65 has security fixes and sets a new security 'baseline' for companies to achieve Java 8 applications.
Users should only use the corresponding PSU release if they are being It's all about how you as a customer want to handle the risks. Java SEĨu66 is a patch-set update, including all of 8u65 plus additionalįeatures (described in the release notes). Recommends that all Java SE 8 users upgrade to this release. Java SE 8u65 includes important security fixes. From the download page ( emphasis added):
