Well, my early thoughts are this:
... Wow, what a really nice looking figure. Colors seem spot-on from what I can tell, and if that shoulder holster is removable that just kicks ass plain and simple. The fact it is functional is great unto itself!
Looks like some nifty articulation going on too possibly. Ball/socket right arm at least, though it almost appears the left arm isn't articulated byeond the shoulder.
Kudos to Hasbro for not sculpting the shoulder pad to the body as they did with the open vest of the Rebel Endor trooper from Saga. Very limiting to the arm articulation.
Great little officer's blaster it seems too, a nice addition and the cape looks plastic from what I can tell. It's holding shape in the images, so sadly no silk cape... That, to me, would be the only major gripe I had with Lando... His inability to sit maybe would be a second gripe since he did do a fair bit of sitting in those duds, but still it looks great.
Yet another amazing fodder figure.
-General Crix Madine
... Wow, another doozie, but dull as hell. Still, it's great to see "Old Supercuts" back in action... (Get it, "old blood & guts" was General Patton... General Madine's "Old Super cuts"? It's a joke son!)
His blue color on his Spec. Forces shirt MAY be off, I'm not sure, but it is looking pretty decent. I can't see his left arm enough to gauge what articulation it may have beyond the shoulder... His right arm, like Lando's, appears to have a ball/socket joint though, great for posing in some amazing "Look at this diagram" poses. He could be talking about anything from the latest assault on the Shield Generator to how Hasbro's stocks recently decreased on his handy pie chart.
Either way he looks more poseable than he probably was expected to be.
Again, no knee articulation and that limits him some (and Lando who deserved it more IMO), but no biggie. A tactical thingie maybe would've been nice with Madine, but I'll take an officer's baton and some extra articulation any day over that, if it's between the two.
So, as for shared parts... I've blown the images up and right now I'm going to tentatively say there's no shared parts except possibly the right shoulder...
The chest badge on both figures is clearly different when magnified, and not a slight retooling but they're actually set differently on each figure. The lines and folds of fabric sculpted into each uniform area of each figure also indicate separate sculpts.
So, while parts could've been used I'm gonna say for now that they're both completely separate sculpts as far as I can tell from enlarged images.
So in conclusion...
Both look great (And I still like Han AT-ST too, just from an army building standpoiont alone), and while I'm disappointed in no silk cape for Lando (or so it seems) I'm ecstatic to see his great little holster. Hell, I'll make my own cape for him if need be.
Articulation in the knees for sitting officers might've been a nice touch but that still seems like a step Hasbro's not going to take yet... for now. Maybe it was Madine's skirt piece and Lando's molded cape that even kept them from considering it perhaps?
Either way, great figures... This is yet another wave I'll probably order a case of since it's got customizing fodder galore, and army building potential in it. Head swap officers, and Head swap Imperial Army Regulars (AT-ST Pilots) galore!