Uh... no. I believe Sony wanted to carry the PS3 on until 2014, although I bet they'll be ready by 2011, just incase Microsoft release a new console. Heck, the slim PS3 has only just come around in rumours, so I doubt PS4 would be out this year.
While they want to keep the PS3 going until then, that doesn't mean the next console will be anywhere near that long. Keep in mind the PS2 for example is still 'going' with big games still being released for it. The PS4 won't be released this Christmas, you're right, but the PS3 will continue being supported after the PS4s release so the 10 year life cycle claims aren't really a guide for the release of the PS4.