From the Apache announcement mailing list:

The Regexp team announces the availability of Jakarta Regexp 1.3 release.

This is primarily maintenance release containing several bug fixes
accumulated since the last Regexp release. Complete list of changes is
available at: “http://jakarta.apache.org/regexp/changes.html”:http://jakarta.apache.org/regexp/changes.html

Regexp comes in one download, containing binary and source code.
Download Regexp from “http://jakarta.apache.org/site/binindex.cgi”:http://jakarta.apache.org/site/binindex.cgi

Bug reports and patches are accepted via Bugzilla,
“http://nagoya.apache.org/bugzilla/”:http://nagoya.apache.org/bugzilla/