The previous thread seems to be closed for no apparent reason as the investigation has been still ongoing and plenty of news has come out since, but..
http://www.tsb.gc.ca/eng/medias-media/avis-advisory/rail/2014/r13d0054-20140805.asp
http://www.tsb.gc.ca/eng/medias-media/avis-advisory/rail/2014/r13d0054-20140805.asp
TSB Canada said:TSB will release its final report into the July 2013 Montreal, Maine & Atlantic Railway train derailment in Lac-Mégantic, Quebec
Lac-Mégantic, Quebec, July 2013
Gatineau, Quebec, 5 August 2014 - The Transportation Safety Board of Canada (TSB) will hold a news conference in Lac-Mégantic, Quebec, on 19 August 2014 at 10:30 a.m. EDT, to make public its report (R13D0054) on the investigation into the July 2013 derailment of a Montreal, Maine & Atlantic Railway train in Lac-Mégantic, Quebec.
Information about the exact venue location will be announced on 11 August 2014, as well as details about an official webcast.