It might've taken a few extra months in the oven, but Stardew Valley's multiplayer update has a definitive release date — August 1. Which, if you have a calendar handy, is less than two weeks away.
Interestingly, for such a big update, there's no announcement on Steam or the official website. There is a trailer, though, with all the information you need.
Actually, that's a lie: the trailer's description has all the information you need:
The Stardew Valley multiplayer update comes out on August 1st, 2018 for PC, Mac & Linux! Xbox One, Playstation 4, and Nintendo Switch multiplayer updates coming soon.
A new Stardew Valley mod removes the player limit for multiplayer, letting you farm with as many people as you want. I'm one step closer to running away with all my friends and living on a farm, provided all my friends are as obsessed with Stardew Valley as I am.
So, the good news is if you have a PC, you're good to go come August 1. Console owners however are in the same position they were minutes ago.
The best I can do in terms of compensation is provide a link to the patch notes. At least you'll know what to look forward to.
Stardew Valley Multiplayer Update — Trailer & Release Date [YouTube, via RPS]