My lovely man just bought me the oversize burgundy Muse from the YSL boutique as a birthday gift. I asked about the presale after scoping out the Uptown (via pictures) and the Downtown. The SA was very clear that she preferred the Muse over any other style. It was also her idea to get the burgundy, because it will go with black, brown, or gray. Pretty much anything but pastels, which I don't wear much.
Hubby was baffled by the concept of "pre-sale". He got it when I compared it to strategic sourcing in business - namely establishing relationships with suppliers to get a lower price. He's still yakking at the sale price though. But obviously he luuuuvs me, even if he doesn't understand me.
This means that an OS Oak Muse is going back to online NM, so be on the lookout if you want one.