BloodFeastMan Sorry if my answer might have led to a misunderstanding or came across a bit harsh.
You are totally right in your assumption that packages that come preinstalled are also part of the repo.
That's why I was first confused, because after reading your initial post, I searched Software Center for Julia without success, only found the juliaup package and then checked the repo itself here. I didn't understand first why there were julia packges in the repo, but not in the Software Center, until I found out about the deprecation.
If a Team member is reading this: is there any other way I might have found out about deprecation of julia instead of the snyc notes or comparing https://packages.getsol.us/shannon/j/ with the Software Center search result?
Like, is there something like a log file or similar that lists all deprecated packages where one could investigate for deprecated packages? Following the matrix channels I have the impression that you yourself in some cases only realize after a while that a package was at some point part of the repo and was then deprecated.
So, maybe here is some room for improvement.
Anyhow, yeah, I also forget about eopkg history sometimes, but in some cases it really provides helpful information.