In a BlackBerry PlayBook presentation there is a slide that put up:
Display: 7.0″ LCD, 1024 x 600, ~16:9
According to my calculations that pixel format is exactly 15.36:1, or ~15:9.
Jim Balsillie, co-CEO at RIM:
This is the only multi-core, multi-processing, multi-tou-asking tablet that’s out there.
Source: BlackBerryFanatic on YouTube