On the front of data, we haven't seen much new. For instance we only know about a single case where this "all halt" event has negative impact; so please speak up if you are affected.
Generally if you want to know the impact to me you can use this handy link to see the number of approved reviews that are blocked on CI Train landings.
Love some of the dates on them too. Notice that some have required writing FFe's now even though the code was completed before distro Feature Freeze. I would say that all of those would benefit from wider testing than just the testing the developers can do locally.