The formula itself is going to automatically start taking into account this new taxing practice. Now you have to remember that the equalization formula is based upon a three-year moving average of data that's lagged two years behind, so that the change that Ontario is going to be making in 2010-11 will only first be seen in terms of equalization payments in 2012-13.
On April 27th, 2010. See this statement in context.