Fun fact: Ash was originally going to start with Clefairy, but they changed it to Pikachu. Just something to consider.
Nafia seems to be using a fire type move in that one game image...
I doubt it's fire, though. I mean, we can't determine everything from it's attacks. After all, it could just be a stat boosting move like Work Up.
Well, logically speaking GF can choose to do anything at any point for the Pokemon games. It would be a TREMENDOUS amount of work however, making sure the type isn't to powerful and balanced, but they can still do it. Also, I can think of a good amount of Pokemon that could be Light type, more then just six.
I'm not saying its 100% set in stone that there will be, and chances are they might not, but with that logic they wouldn't implement anything new, ever.
There won't be new types. They could do that in gen II because there were only 152 other pokemon. If they did that now, there would be like 6 light types vs. 649 pokemon that aren't.
Light would have been a good idea in gen I or II. It's far too late now.
And Ninfia is normal type.
Okay, just putting this here before someone else does and derails any discussion that's going on. On Tumblr earlier, I saw this post appear on my dashboard several times, each response with various degrees of incredulity. It basically says that Ninfia is a Light type, and the light type completes a trinity with Dragon and Steel. It also says that this information was pulled from the source code of the Pokemon X and Y website.
I'm going to call bullsh*t on this now, not because of Light type speculation (which I think is extremely unlikely but hardly the point of this discussion), but because they're introducing it to be strong against the steel type and weak to dragon. Neither of those types need a buffer like that. If they wanted to do things with the type chart, steel and dragon are like the last types they'll be dealing with.
Also, the post says that several Fairy egg group pokemon, including Clefairy, Chansey and Audino will be gaining the Light type. Okay, I'm putting you in an octagon because you have got to STOP. Retroactively adding a steel type to one evolutionary line one generation later is one thing, adding a type to several evolutionary lines, several generations later is crazy. It would totally dismantle the established balance, and I guarantee that the people who follow the metagame will be *****ing to no end if Blissey gains a dragon weakness. Like, seriously. If there's going to be a light type (and I don't think there is, but again, not the point), then maybe one or two lines from before will get it. Maybe.
And then of course there's the fact that there's no official source for this, just someone claiming to have pulled it from the coding on a website. Keep in mind that the info we have on Ninfia comes from Corocoro and not a website. Also, if it was legit, Serebii would have caught wind by now, and we'd all know.
So please, if someone else finds this, please know that it's not to be taken seriously.