Samsung Romania further clarified that the tweet was uploaded by mistake and that it was not intended as official confirmation of the Nexus 3 or any of its specs. The original tweet was most likely based on rumors originating at BGR and not any sort of top secret insider info. While there is still a chance the rumors could pan out, it seems unlikely that Google would favor Samsung for two Nexus handsets back-to-back, but it wouldn't be a total shocker. So boys and girls, back to your speculating on this one. Nothing is official just yet.
source: Android Phone