Hints at new class? Maybe?

[Jonnycbad]

It's probably too early for hints. A new expansion will probably come out next summer, but we likely won't get any info about it until at least E3 in June, Tokyo Game Show in September, or potentially Fan Fest 2018 in November.

If we are going to Thavnair, there's a very very high chance we will at least get Blue Mage, given its near-eastern aesthetic and the fact that Blue Mage and Blue Magic has already been name dropped several times already. I have a feeling that Alphinaud will be the Scion's Blue Mage as Alisae was the Scions' Red Mage. He wears blue a lot, and has a blue hair tie. This is the very first time we ever meet the twins. Notice both of their color schemes. It was already foreshadowed that Alisae would be the Red Mage.

[Brightshadow]

Snip

Doubtful Yoshi-P has no imagination for how a BLU can work in eorzea which is sad because it's a very unique job.

[Kazrah]

If we are going to Thavnair, there's a very very high chance we will at least get Blue Mage, given its near-eastern aesthetic and the fact that Blue Mage and Blue Magic has already been name dropped several times already.

I wouldn't say Blue Mage because (of other reasons) there's one job that's even more likely due to what lore we know of the place as well as being among the top three in demand: Chemist, or at least something along those lines. Even if you're just looking at aesthetic components, Dancer would be even more likely due to gamers who think of dancers in a game are typically thinking of belly dancers that would fit into that visual theme (and it's also more demanded than Blue Mage).

Also, any real early foreshadowing content for jobs (including the Alisaie fight) wasn't until the x.4 patch, meaning that we'll probably have to wait another patch to get any real leads on new jobs