I think I've seen this before, when a version contained a (security?) flaw that was spotted very shortly after release.
If it's a moderately serious fault and your download logs say only a handful of people have downloaded the release, it's probably better and easier to pull the release instead of leave people with it and have to rush a patch.
I am completely guessing what Atlassian might have done here, but I know a couple of development organisations have done that, including one I worked for at the time. Also, if you have highly automated release processes, you can find trigger-happy people release things a little too early (yes, "continuous deployment", I am looking at you...)
As Joao mentioned, we discovered a critical bug in Confluence 5.2.4 related to page restrictions. Due to this bug, Confluence 5.2.4 is no longer available for download. You can find more information about this in the knowledge base article Joao linked to.
Hi team, I’m Avinoam, a product manager on Confluence Cloud, and today I’m really excited to let the Community know that all customers can now try out the new editing experience and see some of the ...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs