The Apocalypse hype hasn't really died down though, from what I can tell. A lot of people are building armies not to 1500 or 2000 points, but to 3000 or more points these days. It's not strictly because Apocalypse is the "new" thing, but because there are actually rules that are regularly updated (or as much as "regularly" applies to GW...) and it's worth the investment in the extra models.
I really am a little surprised they haven't boxed up 100 boyz yet... I mean, they're pushing the new Ork codex (which doesn't need pushing at all... it's friggin' amazing!) so it seems like having a deal where you can get 100 boyz at a slight discount, which you'll use in even 1500 point games most likely, would be good for GW sales.