UPDATE: Twitter announced its own photo-sharing feature on June 1.
PREVIOUSLY: Twitter could launch a photo sharing service as soon as tomorrow, according to TechCrunch.
Twitter's new service will compete with companies like Yfrog, Twitpic and other companies that let users upload photos into their Twitter streams. All Things Digital reports that CEO Dick Costolo will make the announcement tomorrow at the D9 conference.
TechCrunch's Alexia Tsotsis notes that details on the service are slim, writing, "I’ve got no details on what exactly the photosharing URL shortener will be if any (Twitter has owned Twimg.com for a long time) or what the Twitter for Photos product will look like. Just that it’s coming, soon. And if they’re smart they’ll put ads on it."
Though Twitter would be moving into well-populated territory with a photo sharing app, it wouldn't be the first time the company has gone after third-party developers. In some cases, Twitter has simply purchased the company in question, as with Tweetie and more recently, TweetDeck.
But Twitter has also started to crack down on third-party apps that "mimic or reproduce the mainstream Twitter consumer client experience," according to a statement from Twitter platform chief Ryan Sarver. Twitter shut down several platforms it considered to be in violation earlier this year.