Ever since Sprint promised to blanket 100 million people with WiMAX by the end of 2008, we've been wondering just who exactly those people would be. Well, in addition to a few other specifics, Sprint is finally coming clean about nineteen of those markets. The promised cities are as follows: Motorola is prepping service for Chicago, Detroit, Grand Rapids, Indianapolis, Kansas City and Minneapolis; Samsung will develop Baltimore, Boston, Philadelphia, Providence and Washington D.C.; and Nokia will work on Austin, Dallas, Denver, Fort Worth, Portland, Salt Lake City, San Antonio and Seattle. There'll be more location info to come, but that should get us started nicely. Sprint is still promising the limited initial launch by the end of 2007, and that 100 million target for the 2008, but also has an April '08 goal for launching a "number" of markets. Today Sprint is also announcing that Samsung, ZTE and ZyXEL will be building WiMAX modems of the PC card, ExpressCard, USB and built-in varieties, and Sprint is also launching a new "WiMAX Device and Chipset Ecosystem" program for getting as many manufacturers on board as possible. Sprint says they'll be showing off Mobile WiMAX at its CTIA booth this week, so we'll be sure and peep what they've got.