There are dozens of instances on the ROS Wiki of features flagged as having
been "New" in releases that are now EOL:

5 results:
https://www.google.ca/search?q=site%3Awiki.ros.org+%22New+in+CTurtle%22
24 results:
https://www.google.ca/search?q=site%3Awiki.ros.org+%22New+in+C+Turtle%22
60 results:
https://www.google.ca/search?q=site%3Awiki.ros.org+%22New+in+Diamondback%22
54 results:
https://www.google.ca/search?q=site%3Awiki.ros.org+%22New+in+Electric%22
31 results:
https://www.google.ca/search?q=site%3Awiki.ros.org+%22New+in+Fuerte%22
84 results:
https://www.google.ca/search?q=site%3Awiki.ros.org+%22New+in+Groovy%22

For the sake of clarity to new ROS users, should we make an effort to
remove the flags on these now-standard features?