The US:FWS press-release [1] was 12/29. There will also be a public comment period; "To ensure this status review is comprehensive, the Service is requesting scientific and commercial data and other information through a 60-day public information period. [...] it is requested that information be received by March 2, 2015".
In some areas, one of the monarch's main food sources, the milkweed plant, is considered a noxious weed. The number of areas (In Canada, at least) has gone down over the years, which I expect is a plus for the monarch butterfly.
[1] http://www.fws.gov/midwest/news/764.html