It isn't exactly news - I actually thought it had already happened! - but now it's official.
The FCC's website has a page that lists various wireless manufacturers products that are effected by this order, so check your - older - gear!
You can also contact the FCC’s Consumer Center for more information about wireless microphones or other communications issues by calling 1-888-CALL-FCC (1-888-225-5322) voice
- FCC Operation of Wireless Mics in 700 MHz: FCC.gov
- FCC Tells Wireless Mics to Get off 700MHz Spectrum Band: PC World
- FCC orders wireless mic modifications: CNET/The New York Times
- The Digital TV (DTV) Transition: Sony wireless