Deeplinking submission/avaiable time for ltiResourceLink

[JavierHex]

Hi ! I would like to know when does the submission/available time properties will be supported for the LtiResourceLink Deeplinking creation. Currently this feature is available in test environment according to the documentation( I have attached a screenshot from the Canvas docs ) but I was able to set some properties like the scoreMaximum for the lineitem property which is also in testing phase. Also, are these features under a feature flag or something that we can enable ?  Thanks in advance