We've gotten word from Take 2 (our distributor) today that they are putting Galactic Civilizations II into the channel as fast as possible.

Simply put, indie games don't tend to have this kind of demand so they're struggling to meet the demand.  It should be pretty thoroughly stocked by Friday (2 days from now) though some places sporadically do have it in stock.

If there was a graph of "interest level" in the game, it spiked massively as February rolled around from being a smaller title to being a very high demand title.  So everyone's playing catch-up.

If you've pre-ordered it from retail or are planning to get it at retail, please don't cancel your order.  We'll make it worth your while.  We will try to release an update this Friday afternoon to coincide with the wider availability so that you have something to look forward to when you bring the game home beyond what's already available.

We'll put together a Journal entry on what will be in that update, we're still deciding. Probably some additional maps, scenarios, and some bug fixes, tweaks, etc. 

So if it's not at your local store yet, it should be by Friday.  Purchasing at retail helps ensure that the game stays on store shelves longer.