From eurogamer.net:

Eight million Kinect sales in the peripheral's first two months on sale helped Microsoft post a very healthy set of financial figures for the last quarter, with revenue in its entertainment division up 55 per cent year-on-year

Total earnings were up five per cent to a record $19.95 billion of which $3.7 billion came from the entertainment division.

The figures also revealed that Xbox 360 sales were up 21 per cent compared to the same period last year, apparently making it "the world's fastest growing game console".

Xbox Live membership has grown by 30 per cent too.
Full Story: eurogamer.net