they advised everyone of this in january, plus there have been many posts regarding this on this and many other sites.
as said above, the trs that was supposed to be paid at the 2009 rate from jan to jun will be spread over the remainder of the months of the year.
if you move your house to a rip from sept, you are then entitled to trs at the rate which is applicable to you on the interest paid up to that point,
if you are underpaid trs, the revenue should refund you the underpayment of trs prob next march.