you can already, use the baking features, when its in high poly state you can unwrap and render out the normal pass, it works pretty well. wish multires kept the UV though across the levels instead of losing it each time
you can not yet bake tangent normal maps. it is coming as soon as someone codes it. you can however use 3d texture paint and displacement modifier. you have to tab between edit and paint mode for the displacement to update.
Tangent still needed and Sub poly micro displacement mapping…
Aside from that, Ouch to Silo, I hope they pull through, Zbrush is MIA when it comes to updates… Last thing needed is a virtual representation of the alpha of the brushes image if taht has not been added yet