That's according to several US retailers - including GameStop,GameFly and Amazon - who've all listed April 5 as the launch date.
Just to be controversial, another online retailer, CD Universe, has listed an April 6 release.
So far Rockstar's official line has been to expect LA Noire in "spring 2011".
A second LA Noire trailer is due to be released on Monday.
[CVG]