Guild Wars 2

Are they still a thing?

If I’m remembering correctly, during the Chronomancer Points of Interest they mentioned that upon unlocking the Chronomancer Specialization the Mesmer would get access to a unique shield and shoulder skin that matches the spec.

So my questions are:

Is Arena Net still doing this? Did I miss the mention of these skins for the Dragon Hunter or the Reaper? Has there been anything indicating anything about them at all?

Yeah, as said they exist, but they could be pointed out better. So far what we know is (and some is just speculation):
Mesmer – clock shield and temporal shoulders.
Guardian – dragon gauntlets and dragon how.
Necro – Strange looking GS and reaper hood.
Engineer – Hammer (?) and forging mask.
Ranger – Wooded staff and animal/nature like shoulders.

The rest are still a mystery.

They are still a thing. The new skins you see on the characters in screen shots/videos of the elite specs are the rewards (I think at least some of them). If I’m wrong, I’m sure someone will correct me shortly. As far as I know, Chronomancer is just the only one they gave specific attention to. I believe the screenshot here under “Another Arrow in the Quiver” is the Guardian weapon/armor:

https://www.guildwars2.com/en/news/meet-the-dragonhunter-guardians-elite-specialization/

The video of the Reaper in LA going in and out of Shroud had her in new armor as well.