From Broadcast Law Blog:

Federal Register publication of the Further Notice of Proposed Rulemaking on Low Power FM (LPFM) stations and their relationship to FM translators and upgrades of full-power FM stations occurred today. This sets the comment dates in that proceeding - with comments due April 7, and replies on April 21. This proceeding looks at technical issues of whether LPFM stations (which were originally authorized as secondary stations, subject to being knocked off the air if they caused interference to full-power stations (including new stations or increases in the facilities of existing stations), should be protected against interference from such new FM facilities. Also, the proceeding looks at whether LPFM should get a preference over FM translators, perhaps even being able to bump existing FM translators off the air to make way for new LPFM stations. We wrote more about this proceeding, here. FM station and FM translator licensees should be sure to file comments with the FCC on how this proceeding could affect their operations.

Also, free103point9's Tom Roe and Dharma Dailey met last week with the FCC in Washington, with a large group of low-power FM advocates organized by the Prometheus Radio Project, and were told they would publish the MX groups for the recent full-power non-commercial filing within "two to three months."