TYPO3 Core

The property sys_workspace.unpublish_time was hidden during TYPO3 4.5 development from being displayed with a remark that the feature would not be working (see #12333). However, in version 8.7 and 9-dev the TCA property is still available and still handled in AutoPublishService - however, there's not possibility in the regular backend to define that field.

The workspace auto-publishing process was thought to automatically push a (temporary) version to live at a given time (publish), as well as reverting that back at some other date (unpublish). The wording of "publishing" is misleading here, since it actually should be a "swapping" process which allows to switch the live and version state of some element at any time.

Thus, now we can either remove the unpublish behavior completely (from TCA and AutoPublishService) or "enable" this feature again (adding it to TCA types again) & providing better description and documentation.