A few more Grado tidbits:
All models have re-configured the diaphragms. The 60i/80i/125i/225i series have a new rear housing that resembles the SR325i, but in plastic. Grado models SR125i ~ GS1000i have new heavier & thicker headphone cabling. Models SR60i/SR80i/SR125i will be fitted with the 'S' ["soft"] cushions. SR325i will not be gold but silver & is now called the SR325is. Wood species has been changed on the RS/GS woodies and the milling/finishing processes have been made more cosmetically uniform.
Also, John Grado is saying the SR80i model will have a new "distressed diaphragm" design.

Oh, and the PS-1000 will NOT come in a wooden box contrary to some reports. They will be packaged in a hard-sided cardboard box similar to current GS-1000 boxing.
Cheers,
Jorge
HR Sales/Product Manager