As to people wondering about the DPS increase, here's some math.
There's a simple equation you can use to determine BLM pot/GCD (explanation here; if I got any of the numbers/casts phase wrong, feel free to correct me). Currently (2.1), BLM has...
(275 + .25 * 340) + (220 * .5 * .8333) + ((150 + 70 * .4) * 1.8 * 6) + (220 * .5 * .8333) = 2465.73 potency over 9 "GCDs" = 273.97 magic potency per GCD
With the potency increases, BLM has...
(275 + .25 * 340) + (240 * .5 * .8333) + ((170 + 70 * .4) * 1.8 * 6) + (240 * .5 * .8333) = 2698.39 potency over 9 "GCDs" = 299.82 magic potency per GCD
This means that BLM will see about a 9.4% (299.82 / 273.97 - 1) increase in total damage, which might as well just be a 10% increase.