Movie Legends have already hit the chopping block at my local Target (they were down to 3 bucks and change earlier this morning), so I'd imagine more of the ancillary things will be getting marked down soon, at least there. Something tells me that Hasbro's going to start applying the ancillary reductionism to TF soon in the same way they did with SW (i.e. discontinuing non-core lines like Unleashed, Titanium, and Mighty Muggs and focusing on basic toys).
Bumblebee aside, I'm not seeing the rush on TFs this time around as I did with the last film. Even toys I would expect to be selling (like Voyager Prime) aren't really moving right now. The only things that seem to come and go quickly are any Bumblebees, Voyager Starscream, Fallen, and Mixmaster, and, here recently, Sideswipe. GOBS of Skids, Mudflap, Chromia, Barricade, the ill-advised Brawl and Smokescreen repaints, Ratchet, and Ironhide.