The official Driveclub twitter feed appeared to be date the game last night, before being deleted once again.
Luckily someone took a screen of the post before it was deleted. According to the tweet you should, “Mark your calendars 9.4.14.”
Given that Evolution is based in the UK, we are presuming this means April 9, 2014.
There seems to be plenty of rumours going around that the game will arrive before June, but would an April release give Sony enough time to promote the game and build some hype for it?