It seems that Samsung Galaxy 7 Edge has a battery fire risk attached to it. I don’t know how big of a problem this currently is. One incident has been reported in Denmark (Ekstrabladed article here in Danish). At the moment there is nothing that suggests that this is a wide spread problem in Samsung Galaxy 7 Edge mobile phones. Since faulty batteries do happen all the time (mostly due to contamination in production), without the whole mobile phone line (Galaxy 7 Edge, etc) being defective.
This incidents appears to be three months apart, given the current data stamp on the Facebook posts in question. The Facebook posts can be viewed below. One of them in in Danish and was written on last Monday (26.12.2016).
The incident in Denmark.