In a notice this week to Java licensees, Sun wrote:
The rest of the message talked about source code availability, but this sentence made many think that the Rhino binaries were being dropped as well.
Not so, according to Mark Reinhold, Chief Engineer for Java SE. He says this was simply "an unfortunate miscommunication" from the licensee support team, and that only the source for Rhino is affected:
"Rhino is still in the Mustang JDK and in Sun's JRE. What's changed is that we're no longer re-shipping the Rhino source code in our source bundles due to licensing issues. We'll make it available under the MPL for those implementors who want to use it."