In recent weeks, XM has announced a host of agreements creating dedicated XM channels to air content from major news and entertainment programmers including CNBC, to offer XM listeners the latest in financial market and business information; CNET, to provide XM listeners with the latest tech news, analysis and commentary; and MTV Networks, to create two 24-hour XM channels under the MTV and VH1 brand names. XM will offer up to 100 channels of digital-quality sound and provide coast-to-coast coverage of music, news, sports, talk, comedy and children's programming. XM successfully launched its second satellite on May 8, completing its constellation. Commercial service is scheduled to begin late this summer.