I couldn’t find a thread here made specifically for this, and found many things left undiscussed, so here we are.
There were 2 major developments for them:
One being the Winter Queen handing over the Sister’s Tear - now called a World Seed apparently- to Tyrande in the following cutscene -
After the cutscene, Shandris, Ysera and Tyrande have some dialogue. Tyrande asks Ysera why the WQ calls the tear a “seed”. Ysera states that it is touched both by the Dream (retcon-Elune) and Ardenweald. Tyrande says that it must be protected, to which Ysera responds there is a place (Dragon Isles?) that Merithra would know about.
Ysera also states that it would take “great sacrifice” to bring her back, as she is bound by the WQ’s magic to Ardenweald, to which Tyrande says she would do whatever it takes. Ysera says no need for it, and that perhaps she will return one day if “Elune wills it”
Takeaways:
-The tear is a seed, with the souls from Teldrassil linked to it somehow. The seed develops into a new world tree I guess. What form the souls will take in this new tree is unclear.
-Ysera may return one day
-Some retcons, such as Elune being linked to the Dream, likely now because of her affiliation to life.
-No news on a new home for them as of now, as the seed would take time to be protected and grow, but maybe they would build one in Hyjal meanwhile.
The second development was the night elf Dark Rangers. Calia says that if “Tyrande welcomes them back” they are free to join the Alliance, so the ones that came back are those Tyrande/ the night elves took in. I’ve seen no sign of Delaryn on the Alliance side.
I am not sure if other alliance players get a mention of Ren’dorei dark rangers instead, as I tried this on a night elf character and Velonara spoke as if only the night elf dark rangers were returning, with no mention of void elf ones.
But there are still night elf dark rangers on the Horde, as Velonara says that “many of them wish to remain here”.
It is a bit funny that Blizz managed to piss off both sides with the dark ranger development, by giving Horde kaldorei undead, and giving Alliance players blood and night elf dark rangers.