Could I have just discovered a new variety for a Batman comic?

Well, it took me awhile to find this, it's been sitting in the collection for a year or two, but take a look at the picture below. When the Aurora Comic Scenes hoard started coming to the market I decided to get one copy of each. After getting 5 of the 10 issues I notice that the other five were not coming up for sale very often. I did a CGC pop. check and found that the Batman(15 graded), Tarzan, Tonto, Spider-Man, and Lone Ranger had very few graded copies. I kept trying to get all of the issues and ended up with all but the Tarzn, still trying, and even started to buy more than one copy of the low pop. issues.

Just recently I started to update all my collection on the Registry. The Aurora Comic Scenes came first and as I was scaning pictures to upload, I notice the new variety, if that's what it is. When I look at both of then side to side it sure looks like it's an entirely different book. It doesn't look like they ran out of ink during the printing. I don't think it was a mixup in ink because both copies have the person with the yellow shirt toward the right. Both of the front covers on my issues are exactly alike as is everything else but for the tree colors on the back. I may put this up on the Chat Boards just to see what other people think.

I know it doesn't seem right but I would like to name the two different varieties Yellow Batman and Green Batman. I guess that sounds kind of lame, lets just forget the naming for now.