The truth is that the 450R and 400X have not been produced since 2014. They are still available at dealers in 2015 and 2016 as a 2013 or 2014 model. In fact, this same thing happened in 2010 and 2011 when production was stopped because inventory levels were too high. This was just the first time this letter was leaked and shared.
Hopefully what this means, is Honda will try to introduce an upgraded version of at least one of these models in 2018. Or perhaps Honda has produced a replacement machine that has not been made public yet. Either way, it will surely bring some new life into the sport ATV market.