So I was mining PTS and no I can't make head or tails of this BTS X thing, is this a new predessor to PTS?

Will we be GPU mining BTS X? If so when is it being released?

WTF is a dac? I read the "Wtf is a dac" thread but that didn't really help.

Should I be ready to start mining BTS X? Is a gpu miner in development?