UPDATE 3: Ubisoft has formally confirmed that Watch Dogs will launch worldwide on Xbox One, Xbox 360, PlayStation 3, PlayStation 4 and PC on May 27, 2014. A Wii U release will follow at a later date.
"We are pleased to be able to reveal to gamers all over the world the new release date for Watch Dogs," said Geoffroy Sardin, EMEA Senior Vice President of Sales and Marketing at Ubisoft. "We are extremely confident that the additional time we afforded the dev team to refine and polish the game will be more than worth the wait."
UPDATE 2: Here's the trailer:
UPDATE: The May 27 release date has been confirmed by a leaked story trailer via xbox.com.
ORIGINAL REPORT: Watch Dogs is due to release on May 27, according to a tweet by GAME's Eastleigh branch.
The leak comes ahead of an official announcement from Ubisoft, expected at 5pm today.
The tweet has since been removed, but the first few words can be recovered by entering the URL into a Facebook status update, as pictured above.
The date is expected to apply to the Xbox One, Xbox 360, PlayStation 3, PlayStation 4 and PC versions, with a Wii U release due to follow at a later date.
Ubisoft told VideoGamer.com that it did not comment on rumour or speculation when contacted about a release date earlier today.