Yep, our first confirmation that 812S@832S works on DL media in addition to SL media (which OC confirmed a while ago) (the Gigabyte is a rebadged 812S and the 700A is a rebadged 832S).
Regarding HD-BURN. The 700A does not support HD-BURN.
As a note, according to previous discussions on this forum about this... if someone gets their hands on a 832S firmware, they can do the overclock simply by apply LDW851FP to the .BIN firmware. We really need to rename LDW851FP to something different because it can do so much more than just 451@851 overclocks.