Apple Music has filed for trademarks for the names B2, B3, B4 and B5 along with accompanying logos for Beats 2, Beats 3 Beats 4 and Beats 5. The logos match the one currently used by Apple Music's flagship station. Beats 1.
Exactly what the stations will program is unclear. The trademark filings, first spotted by French blog Consomac, only reference the generic descriptions of a service that will broadcast "voice, data, images, music, audio, video, multimedia, television, and radio by means of telecommunications networks."
Beats1 broadcasts 24/7 to over 100 countries from studios in Los Angeles, New York, and London.