Not only is this awesome news but if you read the press release it sounds like its only for android phones and tablets along with windows and mac laptops. I quoted the section below.
To make a long story short it sounds like if you own an idevice you don't get free wifi. The source is below.Starting this week, Wi-Fi users with Android phones and tablets, as well as Windows and Macintosh laptops, will be offered complimentary Wi-Fi at thousands of high-traffic locations in dozens of cities nationwide, courtesy of cloud-based digital entertainment destination, Google Play.
.Google Play foots the bill for 4,000 free Boingo hotspots through September -- Engadget