The purism announcement sounds like you don't choose your batch so much as the batch chooses you. (Although in a more accurate but less amusing footnote you can opt for a later one when your batch is confirmed.)

I'm wondering what the individually milled case will be like. In my mind it's CNCd from a billet of aluminum, but the announcement doesn't really say. If you had that one you could impress people in bars by showing how early you got your Librem 5.