I can confirm this work is started. We’ll let you have more details about release when we have them.Tim Nilimaa-Svärd commented
Make sure to vote for https://microsoftintune.uservoice.com/forums/291681-ideas/suggestions/9850194-deploy-email-profile-to-outlook-for-ios-android as well. Also, as Cathy Moya has mentioned, this needs to be flagged for the Outlook/Office team as well. It has been done at https://office365.uservoice.com/forums/273494-outlook-and-calendar/suggestions/13655289-configure-email-profile-using-intune so make sure to vote there as well.
I can confirm that work on this feature is underway, but I don’t have any details to share about timing.