Wong Kar-Wai has revisited Ashes of Time and produced Ashes of Time Redux. Sony Picture Classics is releasing it in September. It's the only WKW movie I haven't seen yet, and I'm excited to see a version, either version, on a big screen.
On a related note, David Bordwell compares the current cut of Days of Being Wild with an obscure, alternate cut he was lucky enough to screen. There are some spoilers for those who haven't seen the alternate cut, but since it doesn't sound like there are any plans to release this as a redux version, maybe they don't qualify as spoilers. I would give a whole lot to get my hands on this mythical alternate cut as Days of Being Wild is one of my favorite WKW movies. Bordwell tries to decode that last scene from the original cut, the famous appearance of Tony Leung in that one long handheld shot, but doesn't come to any definitive conclusions, even with the new sequencing in the alternate cut..