One -very- important thing about dwarven healthcare... don't ask us why, but sick/injured dworfs don't get to drink booze. A dorf will watch his wife die of dehydration from a stubbed toe if you don't have access to drinking water (but otherwise are drowning in booze). Combine this with the need for clean water to wash out wounds with, and a clean-water well is an indispensible part of any hospital.
Trees and fruits and figs oh my! There are a ton of surface plants that were added, however anything that forms a "pod" is still bugged iirc. Which is another point, plants have "growths" now that change via seasons. Leaves give way to flowers which give way to fruits and veggies. Some plants have edible leaves and edible fruits, but otherwise you have to wait until summer to harvest from them (like most berries). This is also the time that fruit/nut trees ripen. We are seriously not kidding, a single tree can give 100+ edible food. A grove can give you thousands. I went crazy and dedicated all starting 7 as herbalists, and then drafted the rest of my migrants from the first two waves as haulers. I wound up with 10k food before the first year was up without ever putting down a single farm plot. Another tweak that made herbalist OP as @#!& was multi-hauling. Dorfs can carry ~30 small stacks at once, so an herbalist will pick up to 30 odd shrubs before returning home... instead of the infuriating "pick a shrub, run and grab a barrel, drag barrel to shrub, drag barrel back to stockpile, then repeat the whole mess with the shrub directly adjacent to the last one" madness. I've seen herbalist return with over 150 units of plant matter from just a couple of weeks harvesting in dense vegetation. There are new plant fibers to collect, they don't do anything special. However, its much easier to find plant-cloth aboveground for year-round growing with cotton, hemp, flax, etc. Hemp is a little hilarious in that its the only plant that can be both woven into cloth and ground into four. Thus, you can store hemp flour in hemp-cloth bags. You can also press hemp for oil, along with the cotton, flax, and olives (from trees).
Taverns and temples and spoony bards! Breaks are now a relic of hte past, as dorfs instead go looking to fulfill a "need." Tied in with the personalities system, religious dorfs will go "on break" to pray in a temple. Social dorfs just want to gossip. Cantankerous dorfs will get drunk and start arguments and fist fights in the tavern. The taverns and temples are locations you designate from a new command ("l" iirc). The temples are from a table, but the taverns get designated from a meeting area. They need booze and mugs (mugs/goblets have a use now!) Also, the game will look for a clear flat rectangle of space to use as a dance floor. Dorfs will sing, play (procedurally generated) instruments, and dance. You can designate performers (who have related skills and attributes) and attach them to sites, and other dorfs will boo/cheer them depending on their skill. Taverns also attract visitors from other settlements, mostly performers mercenaries and scholars. The mercenaries can be hired into your military and adventures might want access to your caverns. Scholars are tied to the libraries (another location), and will research topics and write books. You can also copy existing books (either on scrolls or bind in books. Can use a few different materials like leather, papyrus, and plant cloths). Scholars can form mentor-apprentice relationships and pass on skills! You can also get in an argument with people and change their beliefs. One guy on reddit became a hearthperson as an adventurer, and then began "tutoring" the lord's son. He made the little tyke into a tyranical psycopath. Another wants to make a demi-god scholar to send into his fortress and convince all of his dorfs about hte values of hard labor and a good work ethic. Another just made a brown recluse spider man dancer to create flash mobs with his mad dance skeelz :p
You can play as animal-people now (you can fly as a bird person!), and even get them as permanent recruits in your fortress. A serpent-man mercenary might petition for long-term residence, and then you can add him to your military. He can then bite people in combat to inflict syndromes. Wren women bards can become residents and be assigned as a permanent performer to your temple. Tigerman scholars can write books on how math is GGRRREEEEAAAATTTT!!! Along with world-activation, these visitors are real historical figures. If there are no giant louse-men in the nearby settlements, you won't get any visitors. If you are at war with the hippies, don't expect them to wander into your tavern (unless they are from another civ). You can even hit a key "n?" at a forge to select what race you are forging for. Since humans are considered "large," they can't wear the small armor that dorfs, goblins, and elves can swap around. Thus, if you get several human soliders (or some exotic animalmen), you can forge armor just for them! This also makes hte armor you get from human caravans slightly less useless.
With the personalities... they can get pretty sick actually. One guy posted a screenshot of a soldier that was getting a string of warm fuzzy thoughts about having a good fight, enjoyed their sparring match, reveled in the slaughter of another, and then was "sad at losing a loved one." She had killed her husband in a sparring match gone wrong, but was such a psycho the loss of her spouse was drowned out by her love of fighting. You can also appoint a broker who hates commerce and gets grouchy when you send him to work. Then there is Bob. Bob is a neurotic mess. He sneezes and gets a panic attack. Before the 2nd year is out, Bob is running around the dining room naked and gibbering like a loon. Bob then dies the next month of dehydration, as he refused to eat because of the crazies. Bob is an extreme case, but dorfs do handle stress differently. One even found a dorven woodcutter who had talked to long with the hippies. This dorf was "horrified at the destruction of plant life." She had picked up hippie ethics, and was getting appropriately stressed about it.
So yeah, a whole ton of junk has been added :p