From a film standpoint, the shots of Vader and the Clones entering the Jedi Temple was one of the later shots added to the film. The actual shot of Hayden doing the walk wasn't shot until the reshoots at Shepperton or Elstree last fall, so I'd imagine that the work on that series of shots didn't actually begin until about early December. I could be wrong though, but I do know that the shot of Hayden walking has only been around for less than a year.
From a Hasbro standpoint, as I've said before, Hasbro will do things that require the least amount of work, stand to bring them the maximum financial returns, and that also serve as a way to tell us "SHUT UP, WE MADE THAT ALREADY, IT'S NOT OUR FAULT YOU DIDN'T BUY IT" if it is something subpar.
Here's what I'm honestly expecting to see in the reports from SD:
-Clone 5 Pack: repainted Bacara with four Clones using the Saga/AOTC/CW Bonus pack bodies, but they'll all have short rifles AT BEST; at worst, it will be figures from the deluxe three packs repainted along with the repainted Bacara.
-Clone 3 Packs (TRU): repainted deluxe Clone 3 packs.
-"The Next 12": new versions of Grievous, Anakin, Obi-Wan, Yoda, Chewbacca, Palpatine, Vader, R2-D2, Mace, (none of which we will want/need) with a new Padme, Commander Cody, and a repainted 41 Clone to throw us a bone.
-Wal-Mart Exclusive: a case full of Mon Mothmas, since WM seems to get the exclusives that nobody else in their right minds would take.
-TRU Exclusive: Obi-Wan's Starfighter (Utapau Version) which will include #1 Obi-Wan instead of the pilot figure, since that would make sense.
-Target: Plo Koon's Jedi Starfighter with the same Plo Koon figure on shelves right now that won't sit in it.
-Animated CW Figures: Two three packs: set one will include a Clone (with a ROTS head), Yoda, and Mace Windu; set two will include a blue ARC Trooper, Obi-Wan (again), and a ROTS version of Anakin that is just a new head on the Mace body with slight paint changes.
-OBLIGATORY ORIGINAL TRILOGY ITEMS: repainted X-Wing with Wedge from the Rebel Pilots three pack, reissue of Luke's Landspeeder with Luke (even though it will be the 1978/1995 version of the ship), and maybe a troop builder four pack of VOTC Stormtroopers with battle damage that will be exclusive to EE and cost 40 dollars a pop.