The name of the 2014 sentai series has officially been licensed
Ressha Sentai Tokkyuger.
The title Ressha is a pun on the Japanese word ressha, which means train using the kanji characters for 烈車 vehement car instead of the usual 列車 line car. While Tokkyu means limited express train. Our new Super Sentai will most likely be train-based!
All that's known are it will involve trains