There were rumors of a tuxedo one, but it was never released, confirmed, or pictured, so it seems to me like it was only wishful thinking.
As to your questions, Ran, the Gamorrean Guard was also shown in the slideshow presentation in a more finished state. He comes with a fur skirt that helps with the proportions and makes his head look much better. (But the in-booth version has weird glossy paint and the slideshow version looks too good to be true, so I'm assuming the actual one will be somewhere in-between.)
There's also the Jedi Luke. Most people weren't happy with the last one. Going off of what anarky said, there's updating an obscure background character from a project nobody remembers, and then there's trying to nail down a major version of the main character of half the saga. I don't know if you bought the 2009 one, but it has a huge chest, bulky shoulders, and a tiny waist, so he looks bizarre in most poses.
The silver border is indeed the new Ultimate Galactic Hunt thing. The figures inside are the same.
Yoda is supposed to be from AOTC, according to rumor lists. I think he's shipping in the same case as the ROTJ wave, which is why they have him on display there. This goes along with the fact that they're moving away from the movie-themed waves. The rumors also say that he's going to have his hover-chair, which I assume will just be a repack of the 2003 one. But it looks like he has articulated knees for the first time, so that's something, I guess.
And since I was going through all the loose accessories at the bottom of the box, I stumbled upon all my incomplete build-a-droids.