Today's release mainly brings the following:
Official containers weren't having any statistics being gathered (download counts etc). Fixed via the appfeed
The sidebar will now display the last time an update was pushed to dockerHub for the app in question
The first date that appears is an estimate of the last time the container was updated. This estimate gets revised every 30 days when the feed gathers the updated stats on the app.
After a second or 2 of the sidebar being open, the actual time the container was updated will then display. This is live as of the time of you opening the sidebar
Note that if the application is "tagged" to pull a specific version (ie: something like :nightly or :2.5 etc), then the update time will not display at all because there is no way to determine the date of that "tag" being issued or updated but rather the date is always about the last update to the dockerHub repository (which implies no tag or :latest)
This will let you determine if a container is still being updated etc. Note that for many apps, updates to them aren't strictly necessary at all. EG: coppit/No-IP works perfectly, requires no updates and indeed hasn't been updated for years.
In the case of containers which are hosted on ghcr (as an example), the date of the update is taken from dockerHub. If the container does not exist on dockerHub, then the date will be "unknown"