Flygon2071 said:
Unless it gets an evolution soon, the speculation is minimal (not much to go on). There are reptiles that aren't Dragon types (Dragon Pokemon are generally based on a Dragon or something related by name, like Flygon and Kingdra).
I'm pretty sure that all of the new pokemon recently shown will have an evolution; aside from Gogoat who I'm unsure about.
I also don't know if this has been brought up but I think that helioptile reminds me of a frilled lizard. http://en.wikipedia.org/wiki/Frill-necked_lizard
However frilled lizards are sometimes also called "frilled dragons". I could be wrong, but it's just speculation and if there is a connection then I think it's safe to think dragon could be a possibility for our little yellow friend.