Yeah, I am very frugal in my collecting since I buy so much (I collect SW, GI Joe, and Marvel all in 3 3/4 scale - used to do IJ too) - so I gotta watch out for overlapping releases of figures and I don't open most anything until months after I get it and keep all my receipts - its hectic - but its how I role.
For this line I am watching out for those IM2 exclusive whatever light up base things that Target is going to have. IIRC the models in wave 1 (implying the possibility for further waves?) as shown on the TF slide were Mark IV, VI, and Warmachine. So, while I am not certain how different, or if I want Mark IV, or VI, Warmachine may very well be a duplicate - so I am not certain if I will get/keep a single card release.