[Update #2]: Total War: Warhammer 2's The Twisted & The Twilight DLC is bringing in goodies for Wood Elves and Skaven.
[Update]: The massive Wood Elf focused DLC has been pinned for a December 2020 release date.
Much like the Beastmen that came before them, Total War: Warhammer 2's Wood Elves suffer from being one of the earliest pieces of Total War: Warhammer DLC. While their units are an absolute joy to play around with, their campaign mechanics are tragically outdated and infuriating to deal with, especially the whole Amber nonsense given how it limits army creativity and diversity.
Thankfully, the next DLC and free update will be sorting all of this out, just like how the recent patch has sorted out the now-amazing Greenskins. While the details are unfortunately still shrouded in mystery, the free update will add a brand new hero, the aforementioned rework of the Wood Elves, as well as major improvements to one of the Total War: Warhammer 2 races.
On the paid side of things, it gets a little bit complicated. If you own Warhammer 2 and this upcoming piece of DLC, you will get a variety of new units, two Legendary lords, new mounts, as well as the ability to play the Wood Elves in the Vortex campaign. On the other hand, if you own Warhammer 1, 2 and the DLC, you will get all of the same features plus the ability to play the new Wood Elf faction on the Mortal Empires map.
However, if you own Warhammer 1, 2, the old Realm of the Wood Elves DLC and this brand new piece of DLC, then you will also get an additional Legendary Lord, new units and characters to use in the Mortal Empires campaign as a bit of a "thank you" bonus to long-term fans. While it sounds quite ridiculous to read through that whole list of requirements, I have to admit that this is actually incredibly fair to all parties and I can only hope the Beastmen will eventually get the same sort of treatment.
Once the full announcement goes live I'll definitely make sure to let you know, but until then you can read a little bit more about the future of the Total War series over at the official website. Enjoy!