While the SKUs are different it is very simple to tell the old from the new revision as the boxes/box art are totally different now... But I still think you are probably right that it might not go on clearance till next year...I doubt that they will go on clearance or if they do probably over a year from now. From what I've seen on this website some of the revisions are already in stores and the only way to tell the difference is the sku. If that is the case I would imagine most OG Switch consoles will be sold by Christmas time to people who have no clue about the revision.