Has it been confirmed that this will happen? So far I've only seen speculation, and while it would be the most logical approach, I wouldn't say so with such confidence until Relic lets us know what they've decided.
I am quietly confident that we will get modding capability back, but it will go hand-in-hand with Steam Workshop implementation, dev-designed (or approved) modding tools and some fairly strict guidelines.
There has been a great deal of discussion about this over at RN with Lardinal, one of the Relic devs assigned to modding duties. I know he's registered over here at COH2.org as well.
I think the problem here is that we will all be waiting a hell of a long time, and a number of perspective modders have long since given up on the game. Relic are simply far too slow to react to anything.