The Klingons will get a new playable species by the end of the month.
They said they're adding hairstyles for other species based on a new species they're developing because they only do new hairstyles when they add species.
The Caitians just got new hairstyles.
It doesn't take much to infer that the Caitians' new styles are "hand me ups" from resources put into playable Ferasans. Which is why they don't necessarily look terribly Caitian. They're Ferasan hairstyles that Caitians inherited.
To me, the only thing more than a chance is a certainty. I suppose you could make the argument that he means a very good chance, but why get hopes up when a commitment neutral "We'd love to see this in game ourselves, we are always discussing new playable races" would have worked just as well?
Since you did not state a specific race in the title and we know the Ferasan are coming, I will add another.
I would like to see the Son'a to the KDF. They were upset with the Enterprise interfering with the Baku incident so they had joined the Dominion. Perhaps with the start of this war, they can see that joining the KDF could be a chance to get at the Federation.