The PS2 is expected to last well into 2008
. Saw its original competitors XBox and GameCube out of production already, and in 2007 Sony is planning to ship more PS2 than PS3 units. I own a PS2, so have no hurry to upgrade.
What looks most interesting to me among the new units is the Wii and its controller. The Bluray playback feature is not so attractive to me in any of the first three units in the market supporting the technology. When it's more mature, and when it's evident that the market has accepted/adopted BluRay (or HDDVD, or both) then I might consider an HD video player.