One difference I noticed on a 764 flight in Jan 2011 is that there is now a diagram etched into the metal of the tabletop showing the procedure to stow the table - how to align the table pivot point for stowing, etc.

I do NOT recall such a diagram when flying the new 764 seats a year or so ago.

Following the instructions in the diagram, I thought stowing the table was pretty easy. The original no instructions version was certainly more of a challenge.