What are the plans for including a FIAT gateway? Which fiat currencies will be available? Will this be handled via coinpayments integration?
I suppose only dollar, euro, yuan and ruble will be allowed. This currencies are the most used at bitcoin's withdrawing. So, it's logical.
From what I read in this thread (and the white paper),
fiat wont be implemented by NVO team. They said fiat can be implemented by anyone else interested
via plugin in the wallet. Having said that, it would be a parallel service, not provided by NVO, but by a third party USING NVO's free platform. So, no one can say what kind of fiat currencies will he handled there.
Our focus is a decentralized exchange. Fiat implementation is not part of our main focus.