Who knows with all of these rumors, but I don't really trust Sony.
I went to E305. I didn't make it to Sony's press event, but I was at Microsoft's. A lot of people thought that Sony would steamroll Microsoft.
They showed that incredible-looking, but pre-rendered, video of Motorstorm and Killzone 2 at the press event and on the show floor. They also talked about dual 1080p HDMI outputs on the console, etc.
At Microsoft's press event where they showed actual builds of DOA4, COD 2, and so forth, and people thought that there would be no contest compared with Sony's much more powerful stuff, and we all know how that generation turned out.
Similar with the PS2 where Sony promised a performance leap over the DC many, many times greater than what we eventually received.
I will buy whichever system offers the best mix of ecosystem, controller, price, launch/announced software, and horse power.