We're not sure if this reflects an impending launch announcement, wishful thinking or just a mistake, but the Lumia 710 is shown as "coming soon" on the US Nokia site.
Nokia is not expected to launch anything in the US till 2012 and even then, it's unclear if that "portfolio" of devices will included the 710 and the 800 or something completely new. Of course perhaps this 710 is simple an unlocked device as we were told both the 710 and 800 would have unlocked versions sold through Nokia's website directly.
Hopefully more will info will come forth today as we finish up Nokia World here in London.
Source: Nokia; Thanks, Jim H., for the heads up