For info -
The "Quick Start Guide" for forthcoming MDR533, 535 & 537 is now available for download: HERE (1.47mb pdf)
Also found the "Owner's Manual" for the forthcoming MDR533, 535 & 537 in the same directory that your link pointed to, It's a 4.9 mb pdf. Here is a direct link to it.
Not sure if the Owner's manual for those has been posted before so if it was then I apologize.