Personally, this sounds like quite a sizeable update. It includes main events for Fanora and Velle along with new events for Iris, Astrid, Vana, Miya "and more". We're also getting a new side character in the form of Francene (Fanora's elven nanny) as well as "several new accessible areas" like Beatrix's house. The post also says they will share details on even more events once the update is actually available. That's a minimum of seven characters getting new events (probably more), several new areas to explore, and more that is yet to be revealed.
I am a fan of Esther as well, but Velle was slightly more deserving of getting some new updates. Fanora is getting a bit too much love currently, but they probably prioritized her in order to progress her story far enough to get Francene added as a new side character. I would have loved to see Beatrix added as a side character, but at least we'll now have the option of visiting her. Also, I am overjoyed to be getting more Iris content as she has definitely become my favorite of the side characters. I'm really digging Vana, too, so I'm glad she'll be featured as well. All in all, this new update checks a lot of boxes for me. Sorry to hear it isn't doing the same for some of you.