The AM3703/DM3730-based Overo STORM COMs and the OMAP3503/OMAP3530-based Overo COMs are all computer-on-module (COM) products within the same Gumstix Overo series.
The same W2CBW003C module from Wi2Wi is being installed on each of the wireless COMs of the Overo series.
You should be able to find a link to the Wi2Wi specification information for their W2CBW003 module via the DETAILS tab on the Overo COM product page.
eg look for the DETAILS tab on this product page: Overo AirSTORM COM.
Thank you for the helpful discussion. It's great to know we're not alone.I noticed that there is a new gumstix line (the STORM products). The chipset is new (Sitara vs OMAP), is it possible that the wifi chip is different, too? There is, of course, no mention of the details regarding the wifi chip on the gumstix information page (other than wifi exists on board).