Twitter and Foursquare are teaming up for in-tweet location tagging.

Twitter this week announced that the ability to tag specific locations in tweets is "coming soon!" and posted a 20-second video highlighting the upcoming feature, which allows users to share their own location, or see what's happening at favorite locations.

Coming soon! We're working with @foursquare so you can tag specific locations in Tweets: https://t.co/MwlLz5Pfvq pic.twitter.com/jATzXvbuV6

— Twitter (@twitter) March 23, 2015

"This is a big deal for Foursquare—not just because we all love Twitter and we're psyched to be a part of what they're building, but because it's yet another example of how ubiquitous the Foursquare platform is becoming—this 'location layer of the Internet' you've probably heard us talk about," Foursquare CEO Dennis Crowley wrote in a blog post.

Rumors of the union began circulating in December, just a month after Twitter acknowledged testing new location-based features.

Twitter users can already tag a location in their posts, but the service doesn't drill down to super-specific spots; most tweets will have a generic locale like "New York, NY" or "San Francisco, CA."

Presumably, the addition of Foursquare data would allow folks to be more specific, showing friends and followers that they're lunching at The Meatball Shop in Greenwich Village or gazing at sea lions on Pier 39.

"I'm very excited about sharing today's news, because I think it allows us to show a different side to a company that you think you already know," Crowley said, teasing "other things" the team is working on.

"It's always been clear to us that the future of mobile + local is predictive, proactive, and personalized—a piece of software in your pocket (or on your wrist!) that's always working to make sure you know about the most interesting things nearby," he added.

Remembering the beginnings of the company he co-founded, Crowley waxed nostalgic, writing that "what started with our first APIs in the summer of 2009" has evolved into a location platform serving more than 85,000 companies and apps.

That includes industry giants like Microsoft (which has a multi-year contract to license Foursquare data for Windows Phone and Bing), Pinterest, Waze, Flickr, Samsung, and now, Twitter—"so that the 500+ million tweets they see daily can have location context, too," the Foursquare chief said.