MediaWiki 1.28.0-wmf.7 has not been fully deployed this week due to a
regression the time to save an edit. I have speculated it might be due
to a recent change made to AbuseFilter (T138550)
Hence for now the train is frozen, potentially the issue will be figured
out today or over the week-end. Release engineering team is meeting on
Monday at 4pm UTC and we will discuss about future steps.
There are two scenarios:
* If we get a fix available on Monday we will push 1.28.0-wmf.7 on all
wikis and then resume the usual train with 1.28.0-wmf.8 cut on Tuesday.
* Else, we will most probably freeze the train until the regression is
figured out and thus postpone the next branch for a week.
Stay tuned on the following tasks, and any help is welcome to figure out
the save time regression!