Okay, I don't believe this breaks protocol in terms of future releases, but it might come close. If so, please ignore this.
Minifig collection 1 is still going strong, it seems. It was on sale recently on Shop@Home via phone special, but it is currently in stock and going for regular price on the site.
Collection 2 (which if I'm not mistaken, just came out earlier this year) is sold out. Is set 2 still on the site because there are plans to eventually restock it? Is there some chance they pulled it in order to correct the printing alignment on the Classic Space torsos before producing anymore? I know Collection 3 is already available in some places in Europe (apparently. the same is the case for Vol. 4). I notice the yellow CS dude has the printing on his torso in the "correct" position.