You piqued my curiosity so I wrote to Nigel at Flashquark to ask about the new switches, since I'm thinking about ordering an Atom66. Here is what he replied:
"We just got in contact with Niz to inquire about the new switches and they said that only certain keyboards in their lineup will be receiving the new switches. They are not sure yet if the Atom66 will be receiving the new switches however. They said that they will be able to give us an answer about that in about a month when they begin manufacturing the next batch of Atom66s. Whether they have new switches or not, we will realistically be back in stock of the Atom66s sometime in the middle of July, as the manufacturer does not have any current stock in their warehouse and we are waiting for them to manufacture more.
Hope that helps!"