It’s also possible that they’ll focus a bit more on the “Rescue” suit that Pepper wears but there’s been this talk about a Mk. 84. I’m really not exactly sure what all that is, could be misdirection but I do want to point out that I just received the Art of IW book last week and it was quite revealing. Usually these books are released with the movie but this was held back because of potential spoilers. From reading the section about the Mk. 50, they really made it seem like this was as far as the tech and Tony’s mind could take it. So I dunno, it’s a crap shoot really.
I love the Mk. 50, even ordered the accessories pack (although I plan to part out 3/4 of it) but I am a certified Iron Man junkie. I grew up reading X-Men, Iron Man, Cap, Avengers and New Mutants in that order, depending on how much $ I had to spend.
Regarding your original question, just PO the thing if you like the figure. I’ve been at this (collecting HT’s) since Avengers 1, so like 6-7 years, and I can definitely tell you that SSC has no rhyme or reason for how they ship batches. I’ve been in situations where I POed day 1 only to have to wait for 2nd or 3rd batch to receive mine and POed when figures released in HK and got my figure with the first batch. They just ship, no order to it whatsoever.