The air filter development is not yet complete though, it’s something that they pointed out in one of the emails that they sent to you when you agreed to have the unit shipped. So they won’t be able to give you a fixed date.
The current best estimates for delivery of the Air Filters is starting in late July I think, and depending on when you ordered, it could be later than that by up to a couple of months.
Is there no way that you can set up a venting arrangement so you can use the machine before then? All you really need is to set the machine up near a window or door, and there are a lot of very clever solutions that people have come up with for temporary venting in the Beyond the Manual category of the forum. Just do a quick search for “venting”.
There are some very unique ideas for venting that apparently work just fine.