That's the update to the Eldar after--what?--20 years?
Its the 2nd round of the refresh. It started with Banshee's and Jain Zar. It will come through in dribs and drabs.
According to the rumors and the article itself - there's a lot more on the way around the time of the codex reveal for both Aeldari and Chaos Space Marines
Kill Team Box with a rumored Aeldari Corsairs Upgrade Kit hinted for sometime around January - so I guess that's the next thing to watch for.