When the PS3 launched last year, it was a console without rumble in its controller, and the only one to do so. While some people got used to it, Sony underestimated how many people would miss their rumbling controllers. Certain developers had even said they'd missed rumble in the Sixaxis. For quite some time, the buzz was that a rumble Sixaxis was in the works, especially since the Wii remote proved that rumble and motion controls can exist side-by-side without control or battery life problems.
They are rumors no more. IGN happened to notice something odd with the Sixaxis they were using to play Burnout Paradise at EA's pre-Tokyo Game Show press event. Specifically that it was heavier and shook while they were playing. Upon deciding to turn the controller over, they just happened to find a sticker underneath the controller with the word "RUMBLE" written on it. If that doesn't indicate that a Sixaxis with rumble is about to be announced at TGS, I don't know what will. And perhaps, this now explains why Metal Gear Sold 4 got delayed into next year.
The formal announcement is expected tomorrow at Kaz Hirai's keynote address.
Check back later for the latest gaming news from what's going on at this year's Tokyo Game Show. I only wish I was actually there.