Patience. The new styles are supposed to come out next month, so retailers will be restocking soon. Give the retailers near you a call, and ask when they expect to get their shipment. If you ask, maybe they'll even agree to call you when they come in!
I did manage to find W42 Sprints at Xmas-time, but it's too damn cold to wear them in CT this time of year anyway. I got to see the 2010 brochure though, and I'm psyched about the new women's styles/colors!