9to5Mac reports that it has received an initial set of leaked model numbers for products expected to be released at next week's Worldwide Developers Conference.The first series of codes that we have received are: MD711LL/A — Better — USA MD712LL/A — Best – USA MD760LL/A — Better – USA MD761LL/A — Best – USAWhile the identities of the products corresponding to the four model numbers is unknown, the pattern showing two sets of two models suggests that they may be either MacBook Air or
