In response to others (because I love dashing hopes):
Harpies – highly unlikely. Firstly, I think it was outright stated that GW2 won’t have flying, though I may be wrong on this. Secondly, all harpies are female, and since they went through the trouble of giving sylvari genders… Thirdly, they’re a very – and I mean very – primitive race.
Centaurs – Anet outright stated early on that they wanted centaurs to be a “black race” (aka evil with few redeeming qualities), and given the model I just don’t see them making it worth the hassle for armor.
Hylek, Skritt, Ogres, and Quaggans – won’t happen. Ever. Why? Racial sympathy, that’s why. Same goes for grawl which haven’t been mentioned yet.
Dwarves – they’re pretty much extinct. They won’t return as a playable race, most likely. Maybe as NPCs, but even that’s questionable in the long run.
Kodan – they seem unlikely given the lack of customization abilities in appearance. Charr have leopard patterns, tiger patterns, Siamese cat patterns, plain patterns, etc. Kodan? They have white, white, and more white. Polar bear people is very limited.
Undead (joko’s or otherwise) – possible, but they’re not really a race. I mean, Joko turns any race into an undead, so the variety is too great to make a playable race out of, both due to being too complex (they’d have to share animations with other races, which breaks the “each race have their own unique animations,” or multiple undead versions of races will share animations, which will just look silly) and due to how NPCs can have even greater variety (in GW1, you got human, centaur, giant, and seemingly charr undead in Joko’s army – in GW2, it can easily spread to heket and harpy, even perhaps ogre).
Now then, my opinions and why:
Tengu – their GW2 models share postures with charr, meaning that they can easily use charr armor designs just as sylvari and human share such. It is said in the Making of Guild Wars 2 book from the CE that the tengu were originally a candidate for a playable race, with the Dominion of Winds to be their starter city, but were cut – however, ANet still views them as a race with future potential. At the end of the personal story, one tengu who joined the Pact says he’ll take news of other races’ abilities to his people, and other tengu say they’re evaluating the races to determine who are their allies and who are their enemies.
Tengu also have among the largest lore established of GW1 races outside humans (even more than there was lore for charr in GW1, and on par to dwarves). In GW2, they also have four houses – similar to how charr have four legions, asura have three colleges, and humans have three social statuses. They can easily be added in any sort of future expansion – be it related to Cantha, or something else in Tyria.
Largos – though not a lot known on them, they seem to be presented in a similar manner as sylvari were, except using the game as the medium of introduction, rather than articles like The Movement of the World. Furthermore, they can easily share human/sylvari armor models with minimal alterations (if any) due to the placement of the wings, at the nape of the neck. And similar to the tengu, there’s a largos who said she’s going to tell her people word of the Pact’s accomplishments against Zhaitan – and its heavily implied they’re fighting the deep sea dragon, so at the very least they will be playing a bigger role. They can easily be added in an Unending Ocean expansion dealing with the Deep Sea Dragon.
I cannot really see a third race as a possibility – kodan come closest, but their lack of customization bothers me though they can still be added into a Far Shiverpeaks expansion, with a large Sanctuary somewhere in that in-land sea that Jormag made as a home city. Naga are also close, if there’s ever a Canthan expansion, but their lack of legs is harmful to their chances and if there’s a Canthan expansion I suspect tengu to be more likely, despite their lack of modern influence with Cantha.
