Pfizer has a policy of announcing its dividend plans for the next year a week before the December options expire. So in about 5.5 months, they will tell what the 2013 payout will be.
I have never seen them raise the dividend more than once a year so 20 cents a quarter is it for the remainder of 2011. In fact, Pfizer just announced its 20-cent planned dividend for Q3.
Pfizer has been raising its dividend by two cents a quarter the last few years and that's what I would expect for 2012 - a hike from the current 20 cents a quarter to 22 cents a quarter. It will be about a 4% yield if the stock is a $22 number at year-end.