[WoRkAh0LiC]

Here is a list of all the figures and their running change counterparts:

Neo Classic Iron Man (no running change)
US Agent (no running change)
Punisher and Blade - Big Pun is out right now, and Blade will be out later on down the line.
Green Costume Dr. Doom and FF Costume Dr. Doom - FF Costume will be released later.
X-Force Deadpool and Red/Black Deadpool - XF is out now, Red/Black coming soon.
Mystique and Danielle Moonstar - Mystique is the current release.

We can't really tell how long because Hasblow is never consistent. They rarely follow actual release dates (like this wave - it was supposed to be released in October originally I think) and they don't always keep their word. How will we know when the running changes are coming? They'll be seen outside of the US first, probably. Also, they'll get sighted on eBay and someone will post it here for all of us to drool over.

EDIT: Hasbro said these are not really variants. They are considered to be RUNNING CHANGES. Which basically means that, somewhere down the line, all of them will be getting sent out at the same time. For now, we have these 6. Once the running changes are shipped, they will still keep on shipping the first cases as well. That's what they say, but I don't believe them.