I spoke with Cirrus the other day and this is what I learned.
Currently, SR-20 aircraft are comming off of the line with an empty weight of 2050lbs plus or minus 20-40lbs. The current Gross weight is 2,900lbs. Sometime later this year, the gross weight will be increased to 3,100lbs.
Therefore, an average SR-20 with an empty weight of 2050lbs today, has a gross weight of 2,900lbs which makes for a useful load of 850lbs.
Later this year, with some small change in hardware, that same SR-20 will have a gross weight of 3,100lbs creating a useful load of 1050lbs.
Since the SR-20’s gross weight will increase while the empty weight, wing, and engine will remain virtually the same, the performance numbers will be changed to reflect the same aircraft with a heavier load. I.E. longer take off run, slower climb, stall speed?, etc.