Wait a minute....
When I went through the menu at the Rigol site, it still says to fill out a form to get a copy. On top of that, the release notes on the webpage that was referenced is the same number as and old release, and the latest dates in it are 2015.
Version Information
Released version: 00.04.03.02.03
Release Date: 10/20/2015
In other words, not the new release, just an old one it seems.