The LEGO Shop online has just posted their ordering page for LEGO Minifigures Series 5.
As usual, you’re limited to 16 minifigs, and you don’t get to stand in the store aisle and feel them through the bags, but it’s a guaranteed way to get your hands on these right away.
UPDATE: Jason Junker has posted a handy guide to identifying Series 5 minifigs by touch.