well some people get i t wrong .. Yellow isn't like Crystal is for G/S or Emeral is for R/S , It's just an special version because the anime sucess, so it's just an extra(Also the hackers say that Jotho and their pokemon where planned to happen there, or at least an "preview" with more compatibility when the actual GS come ...) , the real "updated version" is Blue for Japan (Update from red and green), from this blue come the western Red and Blue ... they don't even make a remake for the "update" so even for an special .... maybe they come with another "anime special" , who knows? it's most probable XD