Hi DIRK,
I found (today 23rd June) below link which has something good to suffice at the moment ,its not matrix we looking for but short 2 pages about new Release Automation and Release Automation CDE details.
I feel this is good to share with our customers when proposing for new RA version upgrade. On more bugfix / newfeature we can use Release Notes pages from the site.
How to open Steps:
1. Press Ctrl+Right Click and it will open new page.
2. Now from the table you can open respective details of particular RA Versions
CA Release Automation Product Release and Support Announcements - CA Technologies
Hope this help at the moment , if you already know this page then please ignore it.
Thank You
Sachin