They promised its heart would go on and on, and now it’s holding to that, as Titanic arrives back in UK cinemas on April 15th, 2012 – the 100th anniversary of the sinking – but this time converted into three-dimensions.Now the trailer for the 3D re-release is here, but sadly on the interweb, it’s rather flat, so we don’t really get to appreciated whether the extra dimension helps things or not! There’s a new poster too, which you can see above.