We don't know anything for sure, it could well be that they were getting the stuff they need in order to produce the figures during this preiod, it could be that they are already hard at work on it and maybe getting someone to come up with some box art for this, but we just don't know unless you got an insider at Hasbro who connected to this project!
I don't have an insider. I'm just being realistic...maybe a touch cynical.
Making molds and tooling requires time and money. A company isn't going to devote time and/or money towards something until they are absolutely certain it's going into production. Hasbro not only had a goal, they had
stretch goals, and it doesn't make a lot of sense to make molds and tooling (or locate and set aside molds and tooling, in the case of the Micromasters) until it's absolutely certain that they're going to be used.
It wouldn't surprise me if Hasbro was optimistic that they'd get enough backers for the second and third stretch goals - as is clear by now, they did. But I imagine that if they hadn't reached the second or third goal, they wouldn't bother making molds and tooling for the stand or the shield, or chase down what they needed for the Micromasters. And in my mind, it makes no sense to start work on the project until they know the full extent of how much work needs to be done. It would be like you ordering a meal at a fast food joint, and then ordering more halfway through the preparation of the initial order.