Info about FOUR-C

Hello together, in my current V70 AWD with level control, driving in laden condition is also a real pleasure with Caravan. Now the friendly one offered me an almost new XC70 AWD with FOUR-C chassis. According to the seller, an electronically controlled level control is included in the FOUR-C, which immediately compensates the level and not only after passing over some unevennesses as in the level mat. Just faster, more precisely, on all four wheels and simply better. The workshop manager could not give me any information about this and referred me to the sale. Can someone confirm or deny that I can find no more accurate information about Four-C and if I have bought the XC it is too late. Please answer and possibly indicate links with information better than the information set by VOLVO on the Internet.