Chungking Express: 1994 <=> TODAY

There are some notable differences between the original version of the movie and the version that was remastered by Wong Kar-Wai and first released on DVD in 2006.

Original version:
UK DVD by the label Artificial Eye (2004)
and simply every older release...

New version:
Japan DVD by Geneon Universal Entertainment (2006)
Korean DVD by Alto Media (2007)
Hongkong DVD by Mei Ah (2008)
UK DVD by Artificial Eye (2009)
UK BluRay by Artificial Eye (2009)

Mixed version (original image*, new sound):
US DVD by Criterion (2008)
US BluRay by Criterion (2008)
*Criterion remastered the original image and therefore removed dirt
and scratches, but the transfer still contains the old credits

Differences:
WKW didn't change the colors for this remaster. But dirt and other stuff was removed.

old version

new version

The title screen was rendered once more.

old version

new version

The end credits are also new, they used to show Chinese characters only, now they also contain Western characters.

old version (2004 Artificial Eye DVD)

old version (2008 Criterion BluRay and DVD)

new version (2009 Artificial Eye BluRay)

The sound was also changed of course. Originally, it was a stereo mix. Then WKW went back to the source materials and compiled a 5.1 track and also added some new sound effects in places. This means the sound atmosphere has changed a bit. While the dominant song of the second episode of the movie, "California Dreaming", can be heard really, really loud in the old stereo mix, it now appears quieter and with added reverb. Personally, in this case I prefer the old mix. The 5.1 mix is great anyway, as the sound is cristal clear - it always sounded pretty scratchy with lots of distortion on the stereo mix that I listened to.