Over last weekend I saw 2046 from my Netflix queue. It's strange that it's already been to Cannes etc. and I can actually see it on DVD, but it's only being released in US theaters this weekend. I don't know if the version that people will be seeing in theaters is edited the same way. Since the film was edited so up to the last minute that it caused its' premiere at Cannes to be delayed for three hours, I wouldn't be surprised if Wong Kar-Wai has been doing a lot more editing since then.
While most of the press coverage of the film focused on the science fiction elements and made the film sound like it was going to be quite difficult, it actually functioned mostly as a fairly accessible sequel to Wong's critical and popular breakthrough In the Mood for Love. The futuristic elements only occupied a small portion of the film. 2046 stood most often for the number of a hotel room, not a year.
As in In the Mood for Love Christopher Doyle's cinematography was sumptuous and the music was beautiful. Another haunting, stylish, downbeat, but ultimately unforgettable mood piece from Wong Kar-Wai. Highly recommended, in whatever form you can see it.