As they've done in other markets, it looks like Clearwire has brought their Philadelphia Mobile WiMax network online ahead of an official launch later this month. Several users have written in to note that Clearwire's coverage maps now list Philadelphia as up and running. The not so official launch comes as Clearwire launched Mobile WiMax in Chicago yesterday -- albeit for business customers only (for now). The two launches add some major city punch to a launch list that consists of a lot of smaller Texas markets. With the Chicago launch, Clearwire's quickly moving toward their 2009 25 market goal.

Service is (or soon will be) available in Atlanta and Milledgeville, GA; Baltimore; Boise; Chicago; Las Vegas; Philadelphia; Charlotte, Raleigh, and Greensboro, NC; Honolulu and Maui, HI; Seattle and Bellingham, WA; Portland, OR; and Dallas/Ft. Worth, San Antonio, Austin, Abilene, Amarillo, Corpus Christi, Killeen/Temple, Lubbock, Midland/Odessa, Waco and Wichita Falls, Texas.

Of course everywhere that Clearwire launches service is quickly followed by launch announcements by Comcast and Sprint. Comcast's bundling the service with VoIP, TV and residential broadband services as a wholesale partner, while Sprint is of course making the network the cornerstone of their 4G plans.

Meanwhile, the "new Clearwire" continues its expansion overseas as well, this week noting they'll be offering Mobile WiMax service in Spain next year. The company already offers service in Ireland and Denmark.