I guess this is the new v1.3.1883 one that I see for download here on GoG. Dug it up myself and figured I'd post it her with the reference in case someone else comes here looking for it.
--Reecey


https://steamdb.info/patchnotes/13435096/


IT'S HERE, ALCHEMISTS!

Well, to be accurate, several things are here.

Number One: Valentine's Day (which is tomorrow, in case you forgot).

Number two: Our new Valentine's-themed DLC, which is full of things shaped like hearts, is live and available to buy right now.

Number three: Our latest update, which is also live and brings a ton of Valentiney things, like new furniture, new Villager dialogue, and the most Valentiney thing of all: being able to marry your favorite person in Moonstone Island!

Let's talk about the things that you'll be getting in this FREE Valentine's Update!

Marriage! You can now marry your sweetie with the new Moonstone Ring. Propose to them and see what they say!
Wedding ceremony! You and your boo will get to have an intimate, cozy ceremony on the Moonstone Island cliffs, overlooking the skies. There's new dialogue here too!
Wedding outfits! Choose from three wedding outfits to suit your style!
Move in together! Once you're married, your spouse will move in with you. This also means new dialogue and new animations, which are custom to each character :)
New Spirits! Largely themed around the Electric type (because, uh, love is... electric), these new Spirits include a robot dog, a toaster mouse, and a stinky sock!
New Dark fish! Woo!
New achievements! Double woo!
Transparent pixels on the loom!!!!!!!!!!!!!! TRIPLE WOOOOO

There are a lot of cool, smaller changes that we'll be highlighting in patch notes later this week, too!