Its a simple 'error' by blah.
Universal & Paramount Distribute the film everywhere, Both HD-DVD Exclusive.
Paramount Pictures Corporation (2007) (worldwide) (all media) (except Finland, South Korea)
Paramount Pictures (2007) (USA) (theatrical)
CJ Entertainment (2007) (South Korea) (theatrical)
Finnkino Oy (2007) (Finland) (theatrical)
Paramount Pictures (2007) (Australia) (theatrical)
Paramount Pictures (2007) (France) (theatrical)
Paramount Pictures (2007) (UK) (all media)
Paramount Pictures (2007) (UK) (theatrical)
Solar Films (2007) (Philippines) (theatrical)
United International Pictures (UIP) (2007) (Argentina) (theatrical)
United International Pictures (UIP) (2007) (Philippines) (theatrical)
United International Pictures (UIP) (2007) (Japan) (theatrical)
United International Pictures (UIP) (2007) (Singapore) (theatrical)
Universal Pictures International (UPI) (2007) (Switzerland) (theatrical)
Universal Pictures International (UPI) (2007) (Germany) (theatrical)
Universal Pictures International (UPI) (2007) (Spain) (theatrical)
Universal Pictures International (2007) (Netherlands) (theatrical)
Transformers 2007 WILL not be on blu-ray. But
Transformers 'the movie' will be.