Seen this the other day.
Was really looking forward to E3 to hear about GTA 5 but Rockstar have pulled out for some reason
I think its safe to say even if this is fake that GTA V will be Vice City's remake, I was reading about the rumours it may of been in Ireland especially consider the amount of Irish folk and things to do with Ireland they included in GTA recently AND RDR but on the other hand VC was featured on alot in IV.
Vice City is a great game and has been crying for a remake with better graphics, bigger map, more characters, more to do, better storyline etc
But yeah I thought I'd post that video and keep GTA fans updated.
