First thank you for the job you make on Jenkins, that's amazing.
Regarding this change, I think it breaks my pipeline. Indeed previously the page mirrors.jenkins.io/war/ provided me with the list of weekly release thus I was able to get the latest version with :
env.JENKINS_VERSION = sh(
script: 'curl http://mirrors.jenkins.io/war/ | grep -oE ">[0-9][0-9]+
.?[0-9]*" | tail -1 | sed \'s/>//\'',
With the new UI i can no longer do this. Is there an URL from which I will be able to automatically get the latest weekly version number ?