No, sorry there are no plans as of right now. We did look into it a while back, however the way ArcGIS Online creates 3D images is not compatible with Maps for Adobe. We are working on a way to bring in map exports from Pro...so this might support your workflow for 3D (via a desktop only) in the future. Thanks for the suggestion.
Map exports from Pro could work as well. We are interested in taking layouts created in Pro, that we have already done the bulk of the styling on, and bringing them into Illustrator for the final touches.
