I will update to confirm the ETA but the current estimate is that it will go out with our first deployment of the year which means it should be everywhere by Monday Jan 20th 2020.
@Jevon I don't know if it makes any difference but I have Name ahead of Content.
For your content field I have it working by going to Expression any typing in body('Get_attachment_content')?['$content'] is this what you have done? If not then I have a solution on Page 10 of this topic that I have functioning for me.
I'd also be weary of naming the variable 'Attachment' it could possibly be a reserved word although I'm only guessing, I imagine you'd have got some kind of error notification if it was.
@Anonymous it worked what I did is i used an existing flow that have the attachment process that is working using the send email and i changed it to content. Btw, the attachments are not visible through the mobile app only for emails?
This feature is completed - you can read more here: https://flow.microsoft.com/blog/file-attachments-in-approval-flows/