Criterion lanza en USA un pack con la trilogía. Parte de un nuevo escaneo a 4K. Muy corta de extras (sería genial que hubiesen incluído el montaje cronológico de las 3 películas), eso sí. En España creo que sólo tuvimos editada la primera entrega en DVD.

DIRECTOR-APPROVED THREE-BLU-RAY SPECIAL EDITION FEATURES

  • New 4K digital restorations, with 5.1 surround DTS-HD Master Audio soundtracks
  • Audio commentaries for Infernal Affairs and Infernal Affairs II featuring codirectors Andrew Lau Wai-keung and Alan Mak and screenwriter Felix Chong Man-keung
  • Alternate ending for Infernal Affairs
  • New interview with Lau and Mak
  • Archival interviews with Lau, Mak, Chong, and actors Andy Lau Tak-wah, Tony Leung Chiu-wai, Anthony Wong Chau-sang, Kelly Chen Wai-lam, Edison Chen Koon-hei, Eric Tsang Chi-wai, and Chapman To Man-chak
  • Making-of programs
  • Behind-the-scenes footage, deleted scenes, and outtakes
  • Trailers
  • New English subtitle translations
  • PLUS: An essay by film critic Justin Chang