EOS 5D Mark II Digital SLR camera - Is this the new future proof SLR Camera?

Is this the new future proof SLR Camera?

EOS 5D Mark II Digital SLR camera, the long-awaited successor to Canon's highly popular EOS 5D, introduced in 2005 [original post here].

• 21.1-megapixel full frame, 24 x 36mm CMOS sensor, DIGIC 4 imaging processor
  
• Expanded sensitivity range from ISO 50 to ISO 25,600
  
• 16:9 Full HD video capture at 1920 x 1080 pixels and 30 fps as well as 4:3 standard TV quality (SD) video capture at 640 x 480 pixels and 30 fps

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