Announced in the Royal Gazette on February 2, two municipalities have changed their name. In both cases the name was originally same as the corresponding subdistrict and is now modeled after the name of the district, as both form the major (or only) municipality within the district. Since both date back to sanitary districts, they only cover parts of the subdistrict. So though it is not stated anywhere, this also opens the possibility to upgrade the TAO responsible for the non-municipal areas of the subdistrict into a municipality later without having to change the name then.
Both renaming have been decided upon in the board meeting 60/2009 on November 19. Seems like I browsed through that transcript a bit too fast when it was placed on the website, as I only notice this point in the agenda now I explicitly searched for it.