问题
Today was the release of Oracle JDK8 U11.
When I try to install the .pkg in OSX yosemite 10.10 I get this error and can't continue.

回答1:
The OSX version is stored in /System/Library/CoreServices/SystemVersion.plist

We can temporary change the OSX version before installing de package.
Change OSX version 10.10 to 10.9:
sudo sed -i '' 's/>10.10</>10.9</' /System/Library/CoreServices/SystemVersion.plist
Install Java and don't forget to change your JAVA_HOME to /Library/Java/JavaVirtualMachines/jdk1.8.0_11.jdk
Restore OSX version
sudo sed -i '' 's/>10.9</>10.10</' /System/Library/CoreServices/SystemVersion.plist
回答2:
There was a bug in the Java 8 package installer which was addressed in the u20 early access release. If you are feeling brave, it is available at https://jdk8.java.net/download.html.
来源:https://stackoverflow.com/questions/24787530/error-trying-to-installing-jdk8-u11-osx-10-10-yosemite